Product Description
M8 A2 Stainless-Steel Socket Cap Set Screws
These M8 socket cap set screws are manufactured from A2 stainless steel and feature a standard M8 × 1.25 metric coarse thread. They are fully threaded and available in selected lengths from 12mm to 70mm.
The cylindrical socket cap head incorporates a 6mm internal hexagon drive, providing secure tool engagement while allowing installation where access around the fastener head is restricted. A2 stainless steel provides good general-purpose corrosion resistance for indoor and moderately exposed applications.
Product Details
- Thread size: M8
- Thread pitch: 1.25mm standard metric coarse
- Available lengths: 12mm, 16mm, 20mm, 25mm, 30mm and 70mm
- Threading: Fully threaded
- Head type: Cylindrical socket cap
- Drive type: 6mm internal hexagon socket
- Head diameter: 13mm
- Head height: 8mm
- Material: A2 stainless steel
- Finish: Natural stainless steel
- Head pattern: DIN 912 / ISO 4762
- British adoption: BS EN ISO 4762:2004
Features and Benefits
- A2 stainless steel provides good general-purpose corrosion resistance
- Standard M8 × 1.25 coarse thread for broad compatibility
- Fully threaded design maximises usable thread engagement
- Compact socket cap head is suitable for restricted spaces
- 6mm internal hexagon drive provides secure tool engagement
- Head dimensions correspond with the DIN 912 / ISO 4762 pattern
- Includes a longer 70mm fully threaded option
Typical Applications
Suitable for machinery, automotive components, manufacturing equipment, brackets, enclosures, tooling, jigs, fixtures and general engineering assemblies requiring a fully threaded M8 stainless-steel fastener.
Installation Guidance
Confirm that the mating component has a standard M8 × 1.25 metric thread. These screws are not interchangeable with M8 × 1 metric fine fasteners. Screw length is measured from beneath the socket cap head to the end of the fastener.
Use a correctly fitting 6mm hex key and apply a tightening torque suitable for the joint, mating material and application. Avoid using carbon-steel torque figures unless the strength class of the stainless-steel screw has been confirmed.
For the 70mm fully threaded option, confirm the required engaged thread length, joint clearance and alignment before installation. A long fully threaded screw may behave differently from a conventional partially threaded socket cap bolt.
Stainless-steel threads can be susceptible to galling during installation. Using a suitable anti-seize compound and installing at a controlled speed can help reduce this risk.
A2 stainless steel is suitable for many general-purpose applications but may not be appropriate for prolonged exposure to salt water, marine environments or aggressive chemicals. A4 stainless steel should be considered where greater corrosion resistance is required.
Please note that published dimensions and specifications are intended as a guide. Confirm any safety-critical or application-critical requirements before ordering.

| A | B | C | D | E | F |
| 8mm | 12mm | 13mm | 8mm | 6mm | 1.25 |
| 8mm | 16mm | 13mm | 8mm | 6mm | 1.25 |
| 8mm | 20mm | 13mm | 8mm | 6mm | 1.25 |
| 8mm | 25mm | 13mm | 8mm | 6mm | 1.25 |
| 8mm | 30mm | 13mm | 8mm | 6mm | 1.25 |
| 8mm | 70mm | 13mm | 8mm | 6mm | 1.25 |