Diameter: 4mm
Bolt Length: 8mm
Material: Mild Steel (Black oxide)
The M4 x 8mm Grub screw is 4mm in diameter and 8mm long. Made from Mild Steel material the grub screw has a black oxide finish that will protect it from any sort of corrosion.
A grub screw is generally used to secure an item against another item. It is commonly used as a locking device, particularly on custom modified Gears, pillow ball bearings, taper locking bushes, pulleys or adjusting rings.
Grub Screws are designed with a hexagonal internal drive in the head, allowing them to be tightened and loosened with an Allen key.

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