#1-72 x 5/8" 內六角螺絲 | 六角內驅動 | 美國製造 | 全螺紋 | 合金鋼熱處理黑色氧化 (100 / 包)

The black oxide finish looks even better in person, and every one of the 100 screws came out of the bag with clean, sharp threads. I’ve been using these in a small fixture build and the hex socket drive grabs the Allen key perfectly without any wobble.

I was a little worried about stripping such tiny threads, but the thermal black oxide finish gave them just enough grip for my tooling fixture without any binding. Every single one in the pack threaded clean and held true at 5/8" length.

The hex drive engaged perfectly with my Allen wrench—no stripping or cam-out even when torquing these little #1-72 screws down tight. They’ll work great for securing a small jig plate on my drill press.