M8-1.25 X 75mm 內六角螺絲 | 平頭六角孔驅動 | 部分螺紋 | 10.9級合金鋼熱處理黑氧化物 (100顆/包)

For the price, these M8-1.25 socket cap screws are a no-brainer for jig building. The black oxide coating has a nice, even finish and they drove into 7075 aluminum without any galling.

Threads were clean and cut perfectly along the entire 75mm, and the partial threading seated nicely in my jig without any wobble. The hex socket drive grabbed firmly with my Allen key, and the black oxide coating has a matte, even look that seems durable. These are holding up well under repeated cla

The black oxide finish on these screws held up perfectly during my jig assembly without any chipping. The hex socket drive engaged cleanly with my driver, making installation smooth.