250pc Assorted Grub Screws Box - Socket Set Screws, M4 to M10

250pc Assorted Box of Grub Screws - 250 black metric grub screws, also called socket set screws, in ten size and length combinations from M4 to M10, with twenty five of every size.

A grub screw has no head at all. It threads right into the part and is driven by a hex key from the end, so it finishes flush or below the surface with nothing sticking out to catch. That is how a pulley, collar, sprocket or gear is locked onto a shaft, and how a handle, knob or lever is held on a spindle.

Box contents (250 pieces total)
25 x M4 x 8mm
25 x M5 x 5mm
25 x M5 x 10mm
25 x M6 x 6mm
25 x M6 x 8mm
25 x M6 x 10mm
25 x M8 x 8mm
25 x M8 x 10mm
25 x M8 x 12mm
25 x M10 x 10mm

Hex key sizes
M4 - 2mm
M5 - 2.5mm
M6 - 3mm
M8 - 4mm
M10 - 5mm

Suitable for
Pulleys, collars and sprockets, gears and couplings, handles, knobs and levers, shaft and spindle fixings, machinery assembly and repair, general workshop use

Also known as socket set screws, set screws, Allen grub screws, headless screws, or a grub screw assortment box.