M8-1.25 X 15mm 內六角圓頭螺絲 | 按鈕頭六角驅動 | 全牙 | 12.9級合金鋼熱處理黑氧化 (400顆/包)

Used a hundred of these in my latest jig build and the hex socket drive made installation smooth even in tight spots. The 12.9 alloy steel gives me confidence they’ll handle the clamping forces without stripping.

The black oxide finish on these screws is holding up perfectly on my tooling fixture, no rust even after some coolant exposure. Threads started clean and seated smoothly in all the pre-tapped holes I tested. Exactly the class 12.9 strength I needed for this assembly.

The hex socket drive on these M8 socket cap screws grabs the driver perfectly, no slipping at all. I used them to secure a jig fixture on my mill, and the 12.9 alloy steel feels rock solid even under heavy loads. Exactly what I needed for precision work.