M10-1.5 X 35mm 소켓 캡 나사 | 접시 머리 육각 소켓 드라이브 | 전체 나사산 | Class 12.9 합금강 열처리 블랙 옥사이드 (100개/팩)

Used a full pack of these on a custom jig I’m building, and the 12.9 alloy steel is clearly up to the task—zero stripped hex sockets even with a torque wrench. The flat head sits flush perfectly, and the black oxide coating hasn’t shown a single speck of rust after sitting in my damp shop for two we

The black oxide finish feels robust and the hex socket drive engaged perfectly without stripping during assembly. These bolts handled the clamping force on my jig fixture without any flexing or deformation. Exactly what I needed for a solid, precision fit.

Pulled these out of the pack for a small machinery repair, and the hex socket drive seated perfectly without any stripping. The black oxide coating has a nice, consistent finish too—feels durable.