براغي رأس مقبس 7/16-14 × 3/4 بوصة | رأس زرية بمحرك سداسي المقبس | سبيكة فولاذ بأكسيد أسود حراري (50/عبوة)

I’ve been using these on a few custom jigs, and the black oxide finish really holds up against minor shop grime. The hex socket drive made them easy to get flush without stripping.

These button heads seated perfectly flush in my jig fixture, and the hex drive didn't cam out even under good torque. The black oxide coating looks exactly like the photo and should resist light rust on the shop bench.

Used a full pack rebuilding a couple of jigs and the hex socket drive bit snugly instead of wobbling like cheaper sets I've tried. All 50 came out of the bag with a consistent thermal black oxide coat, no bare spots or rough threads.