M8 X 20mm Grub Screw SS304 (Dia. 8mm, Length 20mm)

Diameter: 8mm 
Bolt Length: 20mm 
Pitch: 1.25mm
Material: SS 304

Allen Key size used: M4(4mm)

Made from SS304 material these grub screw has a high corrosion resistance.

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.