براغي رأس مقبس 1/2-20 × 4" | رأس زر مع محرك سداسي | ملولب بالكامل | فولاذ سبائكي مع أكسيد أسود حراري (25 / عبوة)

The hex socket drive seated cleanly on my driver with zero wobble, and the black oxide finish held up fine during a full day of tightening jig fixtures. These fully threaded 1/2-20s are exactly the right length for my tooling setup. Packed 25 to a box, so I’ve got spares for the next job.

The thermal black oxide finish is a nice touch—it’s got that matte, industrial look and feels grippy in the wrench. Threads ran clean through my fixture plates without any binding, and the hex socket seated perfectly every time.

Installed these in a jig for a drilling fixture I’m building, and the black oxide coating really helps them slide into tapped holes without galling. The hex socket drive feels precise and doesn’t strip under torque.