براغي رأس مقبس مقاس 3/8-24 × 2-1/2" | محرك مقبس سداسي | صناعة أمريكية | فولاد سبيكة أكسيد أسود حراري (500 / عبوة)

The black oxide finish on these is flawless—no chips or rough edges across all 500, and the hex sockets are cut perfectly true. I ran them into a jig plate and every one torqued down smooth without a single stripped head. For the price per piece, you can't beat this level of consistency.

Got these for a precision assembly and the hex socket drive makes tightening them in tight spots much easier. The black oxide finish looks durable and they thread cleanly into tapped holes without binding.

I needed a full box for a jig project and the 3/8-24 thread cut cleanly all the way through. The thermal black oxide looks even and hasn’t flaked despite some wrench contact, so only minor gripe is the packaging could be sturdier.