RS PRO A4 316 Stainless Steel Countersunk Pozidriv Machine Screws

From RS PRO a high-quality machine screw with a flat countersunk head for flush fitting and a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high quality A4 316 stainless steel which has excellent corrosion resistance. Grade 316 steel is also known as marine grade stainless steel due to its increased resistance to chloride corrosion making it ideal for use in marine applications.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or a slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Countersunk Screw?

Countersunk machine screws, also known as CSK screws have a flat head design so when placed in a pre-drilled countersunk hole they will sit flush with or below the surface of the surrounding material. These screw heads are ideal for use when you need to cover the heads with a screw cap or create a flat surface for placing objects on or fixing other objects to.

What is a Pozidriv Head Type?

Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Countersunk head for a flush finish
• A4 316 Marine Grade stainless steel for excellent corrosion resistance, resistance to
chloride and ability to withstand extremes of temperature
• Easily cleanable
• Meets DIN 965 Standards

What are Machine Screws Used For?

Machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can fastened at the rear with a nut. This marine grade 316 steel machine screw is ideal for use in the following:

• Swimming pools
• Chemical plants
• Boat deck fittings
• Dairy equipment
• Medical sterilising equipment
• Sewerage treatment plants

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used.

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)
Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.

Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)
This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.

Slotted Pan Head Machine Screws, Metric Thread – A2 Stainless Steel

From RS Pro, a range of superior quality pan head machine screws with a metric thread. The fully threaded fixings have a slotted drive type allowing for easy tightening with a flat blade screwdriver. Fixings can be mated with pre-tapped holes or through hole when used with threaded nuts. A2 grade, type 304 stainless steel fixings are available in an array of lengths and thread sizes to suit almost any application.

Note

Requires a flat head screwdriver
We offer a range of slotted pan head machine screws in various thread sizes and lengths. Refer to the datasheet and range overview download file for details.
If A2 (304) stainless steel is not what you are looking for, we can also offer you the fasteners in steel and brass. We also offer the slotted machine screws in A4 (316) stainless steel, steel and nickel plated brass. Refer to the fasteners selection guide for details.

Typical Applications

• Food processing and brewing equipment
• Domestic appliances
• Building fasteners and fixings
• Medical equipment
• Non-salt water marine applications

Features and Benefits

• A2 grade 18/8 Stainless Steel (Type 304)
• Excellent corrosion resistance
• Strong abrasion resistance
• Environmentally friendly, stainless steel is fully recyclable
• Long life
• Low maintenance
• Easy to clean
• Wide temperature range, can be used up to 800°C

RS PRO A2 304 Stainless Steel Pan Head Pozidriv Machine Screws

From RS PRO a high-quality pan head machine screw with a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high-quality A2 stainless steel which has strong abrasion resistance and excellent resistance to corrosion.

Note

This product is not supplied with a washer. To see the range of our cross pan head machine screws please refer to the datasheet and fasteners selection guide. Through these two documents you will also find the various thread sizes and lengths that we have to offer.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Pan Head Screw?

Pan head machine screws, as the name suggests, have a head that looks like an inverted frying pan. The heads are flat on the top and rounded on the sides. When driven into material pan head machine screws protrude rather than sit flush. Pan head type screws are used when a flat bearing surface is needed but a countersunk screw is not required.

What is a Pozidriv Head Type?

Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Pan head design for a flat bearing surface
• A2 stainless steel for excellent resistance to corrosion and oxidation, strong abrasion resistance, low levels of distortion and the ability to withstand extremes of temperature
• Easily Cleanable
• Meets DIN 7985 Standards

What are Machine Screws Used For?

These stainless steel pan head machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This 304 stainless steel machine screw is ideal for use in the following:

• Food processing and brewing equipment
• Domestic appliances
• Building fasteners and fixings
• Medical equipment
• Non-salt water marine applications

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)
Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.
Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)

This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.

RS PRO A2 304 Stainless Steel Pan Head Pozidriv Machine Screws

From RS PRO a high-quality pan head machine screw with a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high-quality A2 stainless steel which has strong abrasion resistance and excellent resistance to corrosion.

Note

This product is not supplied with a washer. To see the range of our cross pan head machine screws please refer to the datasheet and fasteners selection guide. Through these two documents you will also find the various thread sizes and lengths that we have to offer.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Pan Head Screw?

Pan head machine screws, as the name suggests, have a head that looks like an inverted frying pan. The heads are flat on the top and rounded on the sides. When driven into material pan head machine screws protrude rather than sit flush. Pan head type screws are used when a flat bearing surface is needed but a countersunk screw is not required.

What is a Pozidriv Head Type?

Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Pan head design for a flat bearing surface
• A2 stainless steel for excellent resistance to corrosion and oxidation, strong abrasion resistance, low levels of distortion and the ability to withstand extremes of temperature
• Easily Cleanable
• Meets DIN 7985 Standards

What are Machine Screws Used For?

These stainless steel pan head machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This 304 stainless steel machine screw is ideal for use in the following:

• Food processing and brewing equipment
• Domestic appliances
• Building fasteners and fixings
• Medical equipment
• Non-salt water marine applications

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)
Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.
Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)

This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.

RS PRO A2 304 Stainless Steel Pan Head Pozidriv Machine Screws

From RS PRO a high-quality pan head machine screw with a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high-quality A2 stainless steel which has strong abrasion resistance and excellent resistance to corrosion.

Note

This product is not supplied with a washer. To see the range of our cross pan head machine screws please refer to the datasheet and fasteners selection guide. Through these two documents you will also find the various thread sizes and lengths that we have to offer.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Pan Head Screw?

Pan head machine screws, as the name suggests, have a head that looks like an inverted frying pan. The heads are flat on the top and rounded on the sides. When driven into material pan head machine screws protrude rather than sit flush. Pan head type screws are used when a flat bearing surface is needed but a countersunk screw is not required.

What is a Pozidriv Head Type?

Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Pan head design for a flat bearing surface
• A2 stainless steel for excellent resistance to corrosion and oxidation, strong abrasion resistance, low levels of distortion and the ability to withstand extremes of temperature
• Easily Cleanable
• Meets DIN 7985 Standards

What are Machine Screws Used For?

These stainless steel pan head machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This 304 stainless steel machine screw is ideal for use in the following:

• Food processing and brewing equipment
• Domestic appliances
• Building fasteners and fixings
• Medical equipment
• Non-salt water marine applications

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)
Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.
Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)

This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.

RS PRO A2 304 Stainless Steel Pan Head Pozidriv Machine Screws

From RS PRO a high-quality pan head machine screw with a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high-quality A2 stainless steel which has strong abrasion resistance and excellent resistance to corrosion.

Note

This product is not supplied with a washer. To see the range of our cross pan head machine screws please refer to the datasheet and fasteners selection guide. Through these two documents you will also find the various thread sizes and lengths that we have to offer.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Pan Head Screw?

Pan head machine screws, as the name suggests, have a head that looks like an inverted frying pan. The heads are flat on the top and rounded on the sides. When driven into material pan head machine screws protrude rather than sit flush. Pan head type screws are used when a flat bearing surface is needed but a countersunk screw is not required.

What is a Pozidriv Head Type?

Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Pan head design for a flat bearing surface
• A2 stainless steel for excellent resistance to corrosion and oxidation, strong abrasion resistance, low levels of distortion and the ability to withstand extremes of temperature
• Easily Cleanable
• Meets DIN 7985 Standards

What are Machine Screws Used For?

These stainless steel pan head machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This 304 stainless steel machine screw is ideal for use in the following:

• Food processing and brewing equipment
• Domestic appliances
• Building fasteners and fixings
• Medical equipment
• Non-salt water marine applications

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)
Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.
Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)

This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.

Slotted Cheesehead Machine Screws

Machine screws are fully threaded and can be used in pre-tapped holes or used with conforming nuts and washers in through holes.
RS professional quality slotted cheese head machine screws have been designed to give you ease of assembly. The bright zinc plated machine screws are suitable for light fastening applications with their cylindrical shaped head.

Note

Requires a slotted screwdriver
We offer a range of cheese head machine screws in various thread sizes and lengths. Refer to the Datasheet and Range overview download file for details.
If bright zinc plated steel is not what you are looking for, we also offer cheese head machine screws in nickel plated brass. Refer to the Fasteners Selection Guide.

Features and benefits

Typical applications

Recyclable
Non-magnetic

General repair and maintenance
Circuit board mounting
PCB prototyping

RS Zinc Plated Cross-recess Pan Head Machine Screws

From the trusted RS PRO brand, these pan headed machine screws are ideal for use in electronic machinery. The high-quality machine screws are fully threaded and can be used in pre-tapped holes or used with conforming nuts and washers in through holes. The screws are bright zinc plated and offer a degree of environmental resistance, allowing them to be used in most indoor circumstances.

With a pozidriv recess, these pan head machine screws have been designed to guarantee ease of assembly.

Note

Requires a Philips screwdriver
We offer a range of pan head machine screws in various thread sizes and lengths. Refer to the datasheet and range overview download file for details.
If bright zinc plated steel is not what you are looking for, we also offer the cross recess machine screws in stainless steel and nickel plated brass. Refer to the fasteners selection guide.

Features & Benefits

• Plated zinc coating works as an effective barrier against the effects of wear, and helps prevent corrosion and abrasion
• Coating process doesn’t involve any toxic materials
• It is less expensive than zinc-nickel plating
• Highly extends the lifespan of steel products
• Moderate corrosion resistance
• Recyclable
• Non-Magnetic

Applications

Sometimes referred to as machine bolts, machine screws typically fully threaded screws that feature smaller than average thread sizes. Wherever precision and security is required in fixings and fasteners, these machine screws are ideal, and so are often used in machinery fastening applications.


PCB prototyping
Circuit board mounting
General maintenance and repair

What is the advantage of a Pozidriv screw?

A Pozidriv screw is an improvement on the crosshead screw, or Phillips screw. Like the crosshead, the Pozidriv screw naturally centers the torque when a Pozidrive screwdriver is applied, meaning there is less resistance and more control when screwing and unscrewing. To lessen the chance of the driver slipping from the screw head, known as cam out, the Pozidriv screw is preferable even to the Phillips screw.

What is the advantage of a pan head screw?

Pan head screws are different to countersunk screws in that they sit above the surface of the material. They can result in a more secure and accessible screw head, providing a smooth material surface isn’t a priority.

Why RS PRO?

RS PRO aims to be your go-to brand for reliability and value for money. We source great parts at great prices and test everything with our in-house experts to ensure the quality you need.

When it comes to tools, we know that versatility and dependability are what you need. As such, we stock a variety of mainstay and specialist tools to suit any application. Whether you’re a professional electrician, plumber, builder or DIY enthusiast, RS PRO is here to support you.

RS PRO BZP Plated Steel Countersunk Pozidriv Machine Screws

From RS PRO a high-quality machine screw with a flat countersunk head for flush fitting and a versatile Pozidriv recess for a superior grip when tightening. This machine screw has a metric thread and is made from high-quality BZP (Bright Zinc Plated) steel which slows down rusting and corrosion

Note

The function of this product requires the use of a screwdriver. To see the range of countersunk head machine screws please refer to the datasheet and range overview download sheet. Through these two documents you will also find the various thread sizes and lengths that we have to offer.
If bright zinc plated steel is not what you are looking for, we also offer the cross-recess and flat head machine screws in stainless steel and nickel plated brass, to find these please refer to the fasteners selection guide.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Countersunk Screw?

Countersunk machine screws, also known as CSK screws have a flat head design so when placed in a pre-drilled countersunk hole they will sit flush with or below the surface of the surrounding material. These screw heads are ideal for use when you need to cover the heads with a screw cap or create a flat surface for placing objects on or fixing other objects to.

What is a Pozidriv Head Type?

Pozidriv, sometimes shortened to Pozi, stands for “positive drive”. This head type has a cross recess in the centre with four small indentations around it creating 8 points of contact. This design provides improved engagement and contact with the screwdriver and prevents ejection force when tightening or loosening the machine screw.

What is Bright Zinc Plating (BZP?)

BZP is a shiny coating is applied to the steel, this process prevents corrosion and rusting. If the application is situated within a harsh environment, BZP will provide much-needed longevity and reliability. Although it may not be as effective as stainless steel, the added benefit would be the price. As stainless steel is completely rustproof but expensive, BZP Steel offers a great solution and is massively cost-effective.

Features and Benefits

• Pozidriv head type for improved screwdriver grip
• Countersunk head for a flush finish
• Bright Zinc Plated steel for resistance to corrosion
• Meets DIN 965 Standards

Machine screws are designed to hold separate components together in a wide range of applications such as industrial machinery and vehicle engines. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This bright zinc plated steel machine screw is ideal for domestic and commercial use. Applications include.

• Electrical panel building
• PCB Prototyping
• Circuit board mounting
• General production engineering
• General maintenance and repair.
• Light fastening applications

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used.

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)

Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.

Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)

This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.

RS PRO Nickel Plated Brass Steel Pan Head Slotted Machine Screws

From RS PRO a high-quality slotted pan head machine screw with a metric thread. This pan head machine screw is made from high-quality nickel plated brass which has resistance to corrosion and moisture making it ideal for exterior use. The nickel plating on this screw prevents tarnishing and provides a hardened surface. These screws are also known as switch box screws as they are commonly used as fasteners for electrical switches and sockets.

What is a Machine Screw?

A machine screw is similar to a bolt but has a socket or slot in its head that allows it to be turned by a screwdriver. The shank on a machine screw is straight rather than tapered with a full thread which is uniform along the entire length. Machine screws do not tap their own thread into materials like wood screws do but are designed to be fastened into pre-tapped holes in the parts they are fastening together. Having a threaded hole creates a stronger joint and results in a higher quality product.

What is a Pan Head Screw?

Pan head machine screws, as the name suggests, have a head that looks like an inverted frying pan. The heads are flat on the top and rounded on the sides. When driven into material pan head machine screws protrude rather than sit flush. Pan head type screws are used when a flat bearing surface is needed but a countersunk screw is not required.

Features and Benefits

• Pan head design for a flat bearing surface
• Durable with an increased surface hardness
• Corrosion and tarnish resistant
• Water resistant
• Reduced friction
• Decorative finish
• Meets DIN 85 Standards

What are Machine Screws Used For?

These nickel plated brass pan head machine screws are designed to hold separate components together in a wide range of applications such as machine parts and electronic components. They are screwed through pre-drilled tapped holes in 2 components and can be fastened at the rear with a nut. This brass machine screw, due to its anti-corrosive and anti-tarnishing properties is particularly suitable for exterior use. The most common use for these machine screws is in the electrical industry for securing switch and socket fixings. Applications include the following:

• Electrical sockets and switches
• Home and office appliances
• Exterior projects
• DIY and maintenance
• Machine parts
• Electronic components

Frequently Asked Questions

What Does M2.5, M3, M3.5, M4, M5 Mean?

These measurements are found on metric screws, The ‘M’ stands for Metric. The number after the ‘M’ is the nominal outer diameter of the screw in mm.

How Do I Cut a Machine Screw?

Damage to the machine screw threads can prevent parts from fitting together properly, therefore care has to be taken when cutting them and the correct tools used.

Cutting a small machine screw (up to standard size #10 or metric size M5 (5mm)

Use a pair of multipurpose wire strippers or electricians pliers that feature M2.5, M3, M3.5, M4, M5 threaded holes. These holes are designed for cutting bolts without damaging the thread. Open the jaws and thread the machine screw into the correct size hole to the distance required. Squeeze the tool handles closed and the screw will be cut at the point where the two halves of the jaws come together. You will have a clean cut without any thread damage.

Cutting a large machine screw (larger than size #10 or metric size M5 (5mm)

This is best done using a hacksaw. Thread the nut on the screw until it reaches the desired point on the head side of the cutting line. Place the screw in a vice or clamp to keep it secure when cutting and cut the screw as straight as you can. When you unthread the nut it will repair and realign any threads that may have been damaged by the saw blade.