Set Screws

Custom and Special Set Screws

Pattern Fasteners manufactures standard, special and custom set screws for a wide range of industrial and engineering applications.

Set screws are fully threaded fasteners, typically threaded along the complete length of the shank beneath the head. They are commonly used where full thread engagement is required through the assembled components or into a tapped hole.

We manufacture set screws to customer drawings, existing samples, recognised standards and bespoke specifications, with options for non-standard dimensions, specialist threads, materials, mechanical properties and finishes.

Fully Threaded Set Screws

Unlike a partially threaded bolt, a set screw typically has an external thread extending along the full usable length of the shank.

This makes set screws particularly useful where:

• Full thread engagement is required

• Components of varying thickness need to be assembled

• The fastener is screwed directly into a tapped component

• Adjustment along a greater proportion of the fastener is beneficial

• A non-standard length or thread configuration is required

Set screws can be supplied with standard head styles or manufactured with bespoke features to suit the application.

Custom and Non-Standard Set Screws

Standard set screws suit many applications, but specialist engineering projects often require dimensions or specifications that are not readily available off the shelf.

Pattern Fasteners can manufacture set screws with:

• Metric and imperial threads

• Coarse and fine thread pitches

• Standard and non-standard diameters

• Bespoke overall lengths

• Full-length threads

• Custom head dimensions

• Special head and drive styles

• Reduced or modified sections

• Cross-drilled features

• Specialist material grades

• Heat treatment and controlled hardness

• Protective or decorative finishes

Components can be produced from a drawing, sample or individual specification.

Hexagon Head Set Screws

Fully threaded hexagon-head set screws are widely used throughout machinery, manufacturing and general engineering.

The external hexagon head allows installation using conventional spanners or sockets, while the fully threaded shank provides flexibility in positioning and thread engagement.

Standard metric hexagon-head screws may be manufactured to specifications such as ISO 4017 and DIN 933, while special versions can be produced with dimensions or features outside recognised standards.

Where a standard fastener does not meet your requirements, our team can manufacture a bespoke alternative.

Set Screws vs Bolts

The terms set screw and bolt are sometimes used interchangeably, but a useful distinction in many UK engineering applications is the amount of thread on the shank.

A set screw is typically fully threaded beneath the head, whereas a bolt may incorporate an unthreaded shank between the head and threaded section.

The correct design will depend on the joint, loading conditions, component thickness and required thread engagement.

If you are unsure which type is required, our technical team can review your drawing or application.

Materials and Strength Grades

Set screws can be manufactured from a wide range of materials according to the mechanical and environmental demands of the application.

Options may include:

• Carbon steel

• Alloy steel

• High-tensile steel

• Stainless steel

• Brass

• Aluminium

• Titanium

• Specialist and non-ferrous alloys

Mechanical properties, strength grades and heat-treatment requirements can also be incorporated into the manufacturing specification.

Finishes and Secondary Operations

A variety of protective and decorative finishes can be applied to improve corrosion resistance, appearance or performance.

Options include:

• Bright zinc plating

• Chemical black

• Phosphate coatings

• Tin plating

• Chrome plating

• Customer-specified coatings

We can also incorporate secondary operations such as drilling, thread locking and laser marking as part of the complete manufacturing process.

Applications for Set Screws

Set screws are widely used across industrial and engineering assemblies, including:

• Machinery and manufacturing equipment

• Automotive assemblies

• Construction equipment

• Energy applications

• Oil and gas equipment

• Industrial structures

• Electrical equipment

• General engineering

• Bespoke mechanical assemblies

Set Screws Manufactured to Your Specification

Pattern Fasteners has manufactured special and non-standard fasteners in the West Midlands since 1981.

Customers choose us for:

• Set screws manufactured to drawings or samples

• Standard and non-standard sizes

• Metric and imperial thread forms

• Bespoke lengths and head dimensions

• Specialist materials and strength grades

• Heat treatment and finishing

• Secondary machining and modifications

• Small batches and repeat production quantities

• UK-based manufacturing support

Request a Quote for Custom Set Screws

Need a standard, modified or completely bespoke set screw?

Send us your drawing, sample or specification and our experienced team can review the dimensions, thread form, material, strength grade and finish required for your application.