Description:
M4x10mm flat knurling head style round thumb screw.
Knurled head provides extra grip for hand tightening Normally as seen on thumb screws, the knurling surface of the head provides a good gripping surface and makes it easy to manually tighten or loosen the fastener.
Thumb screws are designed to tighten or loosen by hand. No need for tightening or loosening tools.
Knurled thumbscrews are attached to your fingers and are used to hold the light cover in place.
d: L: L2 : dk : k1 : d2 : ds
M4 : 12mm : 20mm : 12mm : 8mm : 4mm : 7mm :
8mm