براغي رأس أسطوانية 5/8-11 × 1 بوصة | رأس زر مع مقبس سداسي | حبيبات نايلون | ملولبة بالكامل | فولاذ سبائكي مؤكسد حراريًا أسود (50 / عبوة)

The hex socket drive really grips the Allen key without stripping, which is a huge plus for repeated assembly on my jig. These are perfectly sized for securing nylon pellet inserts in tooling fixtures.

The black oxide finish on these screws is really even and durable, much better than cheaper coated bolts I've used. Each one threaded smoothly into my tooling fixture without any binding or galling. Perfect for precision jigs where you need a consistent fit.

Needed a bag of these for the jigs in my shop and the black oxide finish looks clean and professional, definitely a step up from plain zinc. The nylon pellet held the threads snug on the first use, and the hex socket drive seated perfectly with my Allen key. For the price, getting 50 of these in thi