M5-0.8 X 90mm 內六角螺絲 | 內六角驅動 | 半牙 | 12.9級合金鋼熱處理黑氧化 (200顆/包)

I needed 90mm screws for a jig I was building, and these M5s threaded perfectly into the aluminum without any binding. The hex socket drive made installation a breeze with a standard driver.

The black oxide finish on these M5s looks sharp and gives a nice, uniform surface on my jig build. Threads cut cleanly into the aluminum, and the 90mm length was exactly what I needed for the stack-up. Definitely a solid batch for the price.

Installed these in a custom fixture today, and the 90mm length was exactly what I needed for a thick clamping setup. The black oxide coating gives them a nice, uniform finish and seems resistant to minor scuffs during assembly.