براغي رأس مقبس 5/8-18 × 1-1/4 بوصة | رأس زر بمحرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي أسود حراري (100/عبوة)

I used these for a jig I was building, and the hex socket drive made installation much easier than a standard hex head. The black oxide finish seems durable, and all 100 pieces threaded smoothly into tapped holes without any binding.

The black oxide coating on these screws gives them a nice, even finish that blends well with my tooling projects. They seated cleanly into the threaded holes without any binding, which I appreciate for precision work. Definitely a solid choice for jig building.

Installed these in a jig I built for metal fabrication, and the 5/8-18 threads bit perfectly into the tapped holes. The hex socket drive allowed me to torque them down without stripping. Great value for the pack of 100.