M10-1.5 X 20mm 內六角圓頭螺絲 | 內六角驅動 | 全牙 | 10.9級合金鋼熱處理黑氧化 (200顆/包)

The black oxide finish on these screws held up perfectly during assembly, no galling even with repeated adjustments. Exactly the class 10.9 strength I needed for some press tooling, and all 200 arrived clean and well-sorted.

I needed a fresh batch of M10 screws for some jig repairs, and these threaded perfectly into pre-tapped holes without any binding. The hex socket drive held up well under decent torque without stripping.

The black oxide finish on these is what sold me—they look clean and resist scuffs way better than plain zinc ones I've used. For a 200-pack at this price, the Class 10.9 strength is a solid deal for my tooling fixtures, and the hex drive engages crisply without stripping.