M3 x 8mm 杯頭內六角止付螺絲 | 316不鏽鋼 (500 / 包)

The cup point grips really well on aluminum parts without marring the surface too much. These M3 screws fit perfectly in my jig's adjustment holes, and the 316 stainless gives me confidence they won't rust in the shop.

The cup point really bites into the shaft—no slipping even after a week of vibration on my CNC rig. And for 500 pieces, the 316 stainless finish looks clean and uniform straight out of the bag.

The hex socket drive made these incredibly easy to torque down in a tight bracket on my camera rig. I'm impressed with the 316 stainless construction—no rust concerns even in my damp workshop.