M8-1 X 50mm 六角頭螺絲 | 10.9 級鋼 無鍍層 | 全螺紋 (800 入/包)

Bought these for a batch of machine guards and the 10.9 grade steel feels properly tough, threading was consistent all the way down. The 50mm length worked perfectly for the 20mm plates I was joining. Pack of 800 means I won't be reordering for a while, which is exactly what I wanted.

The hex head is machined cleanly enough that a 13mm socket slides on without any wobble, and every single one of the 800 threads cut smoothly during assembly. Class 10.9 strength gives me confidence these will hold up under heavy vibration in our press equipment.

These M8 bolts seated perfectly in my bracket mounts with zero wobble. The 10.9 grade gives me confidence they’ll hold up under heavy use. Good to have a full box on hand for future projects.