HOLO-KROME 76336 M10-1.5 X 70mm 內六角螺絲 | 六角驅動 | 合金鋼 熱黑氧化物 (50 / 包)

The socket drive fits perfectly on my hex keys and the threads are clean right out of the box—no binding or cross-threading on my jig setup. For 50 pieces at this price, the alloy steel body feels solid and the black oxide coating gives them a nice, uniform finish.

The black oxide finish is holding up way better than the zinc-plated screws I used before, no rust after a month in a damp garage. These M10s threaded into my jig cleanly without any gunk in the socket drive, and the 70mm length was spot-on for my fixture.

The thermal black oxide finish on these M10-1.5 x 70mm screws looks really clean and seems durable; I'm using them for a jig build and they fit perfectly.