M4-0.7 x 45mm 內六角螺絲 | 六角驅動 | 全螺紋 | 18/8 不鏽鋼 (400 顆/包)

I bought these for a jig I’m building, and the 45mm length was exactly what I needed to reach through thicker brackets. The threads cut cleanly into the stainless with no binding, and the hex socket drive held up without stripping even under moderate torque.

The hex socket drive on these grips a bit better than cheaper allen heads I've used before, so no stripping when I torqued them into my jig fixtures. Finished a whole rebuild and every one of the 400 seated cleanly without a single cross-thread.

Exactly 45mm long as described, these fit perfectly into my jig setup without any extra trimming. The fully threaded shaft gives a solid grip in the tapped holes.