M12-1.25 x 90mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 12.9級合金鋼熱處理黑氧化 (25/包)

The black oxide finish looks properly done—no flaking or uneven spots like I've seen on cheaper sets. Threads engage smoothly on the 90mm length, and the hex socket drive grabbed firmly even with my torque wrench.

I needed M12 bolts with enough length for a jig setup and these 90mm ones were perfect. The hex socket drive made installation easy with just an Allen key. Great finish, no burrs or oil residue straight out of the pack.

The partially threaded design on these M12 screws made aligning my jig fixture so much easier. The hex socket drive bit fit perfectly without any wobble, and the black oxide finish looks clean on my tooling setup.