براغي رأس مقبس مقاس M8-1 × 50 مم | محرك مقبس سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 أكسيد أسود حراري (100 / عبوة)

Installed these in a jig build and the hex socket drive made tightening them in tight spots effortless. The 12.9 alloy steel feels much more robust than the standard 12.9 stuff I've used before.

The black oxide finish on these screws held up perfectly during assembly, and the hex drive seated without any stripping. They’re a solid upgrade from standard cap screws for tooling.

I’ve used these in a few jig builds and they seat cleanly with a hex key, no stripped heads even when torqued down. The black oxide finish on the 12.9 alloy steel looks sharp and handled oil and chips without any rust so far. Exactly what I needed for precision assemblies, and the 100-count box cove