براغي رأس أسطواني بمقبس سداسي 5/16-18 × 1-1/4 بوصة | رأس مسطح بمقبس سداسي | صناعة أمريكية | فولاذ سبائكي مع أكسيد أسود حراري (100/عبوة)

The black oxide finish on these gives them a nice, uniform look right out of the bag, which I appreciate for visible tooling. I've torqued a few down hard on a fixture and the hex drive hasn't stripped once. Solid fasteners for the price, and the 100-count pack means I've got spares for the next pro

Used a full pack on a jig build and every single screw threaded clean without a single stripped head. The hex socket drive bites perfectly, and the thermal black oxide finish held up to shop oil without spotting. Glad I went with the USA made option this time.

The black oxide finish on these is even and smooth, no flaking or uneven spots across the whole hundred. They seat flush in my jig plates without any binding on the flat head, and the alloy steel feels solid under torque.