براغي رأس مقبس 7/8 × 2-1/2 بوصة | محرك مقبس سداسي | صناعة أمريكية | سبائك فولاذ بأكسيد أسود حراري (10 / عبوة)

I needed a fastener that could hold up in a jig that gets daily torque, and these alloy steel screws haven't stripped or shown any wear after weeks of use. The black oxide finish feels durable, and they seated perfectly with a standard hex key.

The hex socket drive gripped my allen wrench perfectly, no stripping at all even when I torqued them down in a steel jig. Threads ran smooth the whole way in, and the thermal black oxide finish looks sharp against the machined surfaces.

The black oxide finish on these screws gives them a nice, uniform look, and the hex socket drive grabbed my Allen key without any slipping. I used them to bolt down a steel fixture plate, and they held rock-solid with no stripping. Solidly made and came in a neat 10-pack.