M22-2.5 X 40mm 內六角螺絲 | 六角驅動 | 全螺紋 | 12.9 級合金鋼 熱處理黑氧化物 (10 個/包)

The hex socket drive fits my torque wrench perfectly, and the black oxide finish already matches the industrial look of my jig setup. These M22 bolts feel solid in hand, no wobble at all when torqued down.

I replaced the bolts on my milling machine jig with these and they fit perfectly with no slop. The black oxide finish seems durable and the hex socket drive engages cleanly. Got exactly the right grip length for a recessed bolt pattern.

I was a bit surprised at how hefty these M22 socket cap screws feel in hand - the black oxide finish looks professional and the threading is really clean. They worked perfectly for securing a jig fixture on my milling table.