Description
M3 x 8mm Grub Screw – Grade 12.9 Black Oxide is a metric fastener selected for compact mechanical assemblies, maintenance and general engineering use.
Key specifications
- Thread / size: M3
- Length: 8 mm
- Thread pitch: 0.50 mm
- Material: High Tensile Alloy Steel
- Head style: Headless / Set Screw
- Drive: Internal Hex (Allen)
- Finish / coating: Black Oxide
- Strength grade: 12.9
- Recommended tool: 1.5 mm Allen key
Typical applications
- Gears and pulleys
- Shaft collars
- Adjusting rings
- Locking bushes
Headless grub screw for locking one component against another. M3 coarse pitch is 0.50 mm.




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