براغي غطاء مقبس بقياس 5/8-11 × 3 بوصة | رأس مسطح محرك مقبس سداسي | ملولبة بالكامل | سبيكة فولاذ أكسيد أسود حراري (25 / عبوة)

Finally, a set of 5/8-11 screws that actually hold up under heavy clamping loads without stripping the hex socket. The black oxide finish looks professional and seems to resist rust better than the zinc-plated ones I've used before. Perfect for my current jig rebuild project.

Just got these for a tooling fixture at work and the black oxide finish is really uniform, no flaking. The hex socket drove in clean with no cam-out, which I appreciate.

Installed these in a jig for a production run, and the hex socket drive made tightening them with a ball-end Allen key effortless. The fully threaded design gave me solid grip through the entire 3-inch length, too.