M8-1.25 X 22mm 內六角螺絲 | 平頭六角驅動 | 全螺紋 | 12.9 級合金鋼熱黑氧化 (200 入/包)

The black oxide finish on these looks clean and gives them a nice uniform grip when seating in tight spots. All 200 came with threads cut perfectly clean, and the 12.9 alloy strength is exactly what I need for my precision fixture.

Installed these on a jig I’ve been building and the flat heads sit perfectly flush with no wobble—feels solid. The hex socket drive made tightening a breeze even in tight spots.

Finally found black oxide bolts in this exact length—they match the rest of my tooling setup perfectly and the hex socket grabs without slipping.