M5-0.8 X 75mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 12.9 級合金鋼熱黑氧化物 (200 / 包裝)

These 75mm screws fit perfectly into my precision assembly fixture, and the black oxide finish resisted oil staining during a full day of use. The hex socket drive grabbed the Allen key securely without any stripping on the first ten insertions.

I needed a robust fastener for a jig I’m building, and these M5-0.8 x 75mm screws with their hex socket drive fit perfectly. The Class 12.9 alloy steel feels incredibly sturdy under torque, and the black oxide finish looks clean in my assembly.

The partially threaded design made a big difference when I was securing a jig base — no more fighting to get full threads to seat. They torqued down evenly without any deformation, and the hex socket drive held the Allen key perfectly every time.