HOLO-KROME 76252 M8-1.25 X 40mm 內六角螺絲 | 六角驅動 | 合金鋼熱處理黑氧化 (100 顆/包)

These M8 bolts threaded perfectly into my milling machine's T-nuts without any binding. The hex socket drive made installation easy even in tight spots, and the 40mm length was exactly what I needed for my jig setup.

The black oxide finish on these screws is exactly what I needed for a tooling fixture—they slide in cleanly and the socket drive grips the hex key without any wobble. All 100 came out of the package free of burrs or coating defects, which saved me a lot of deburring time.

Used them to rebuild a small milling fixture in my shop, and the black oxide finish held up well against cutting oil without any surface rust. The 40mm length was exactly what I needed for this particular setup.