Product Description
M20 Grade 12.9 Self Colour Socket Cap Screws – Fully Threaded
M20 fully threaded socket cap screws manufactured from property class 12.9 high tensile steel with a self colour finish. Featuring an M20 × 2.5mm metric coarse thread, they suit machinery, tooling and mechanical assemblies requiring a high strength metric fastener.
The cylindrical socket cap head takes a 17mm Allen key or hexagon driver bit. The fully threaded design allows installation into a matching tapped hole or use with a suitable M20 nut.
Specifications
| Thread size | M20 |
|---|---|
| Nominal diameter | 20mm |
| Thread pitch | 2.5mm – metric coarse |
| Thread direction | Right hand |
| Material | High tensile steel |
| Property class | 12.9 |
| Finish | Self colour |
| Thread coverage | Fully threaded |
| Head style | Cylindrical socket cap head |
| Drive size | 17mm hexagon socket / Allen key |
| Head diameter | 30mm maximum |
| Head height | 20mm maximum |
| Listed length | 40mm |
| Length measurement | Measured from beneath the head to the tip |
Key Features
- Property class 12.9 high tensile steel construction.
- Fully threaded M20 × 2.5mm metric coarse thread.
- Socket cap head with a 17mm internal hexagon drive.
- Suitable for matching tapped holes or compatible nuts.
Typical Applications
Suitable for machine building, tooling, equipment maintenance, brackets and fixtures where a fully threaded M20 high tensile socket cap screw is specified.
Installation
Use a correctly fitting 17mm Allen key or hexagon driver bit. Ensure sufficient thread engagement and check that the screw cannot bottom out in a blind hole before the joint is clamped.
Apply a tightening torque appropriate to the fastener, mating material, lubrication and joint design. Self colour steel requires suitable protection when exposed to moisture.
Ordering
Check the selected length and pack quantity before ordering. Screw length excludes the head height.
Standards
- DIN 912 / ISO 4762 – socket cap head dimensional pattern.
- ISO 898-1 – mechanical properties, property class 12.9.
