M8 X 12mm 杯端內六角止付螺絲 | 合金鋼鍍鋅 (500 / 包)

Needed to replace some worn-out fasteners on a metalworking fixture, and the hex socket drive made snugging them down in a cramped corner effortless. The cup point tip seats flush without any wobble.

Installed these in a jig I’m making, and the hex socket drive made quick work of tightening them in a tight corner. The zinc plating looks clean and seems durable, no rust yet after a few days in a damp shop.

The cup point really bites into the shaft without marring the surface too badly, which was my main worry. I used about a hundred of these to secure collars on a custom linear motion rig, and every single one threaded smoothly without any galling. For the price per piece on this pack, you'd be hard-p