براغي رأس مقبس 1/4-20 × 5/8" | محرك مقبس سداسي | صنع في الولايات المتحدة | فولاذ سبائك معالجة حرارياً بأكسيد أسود (300/عبوة)

The hex socket drive fit my driver bits perfectly, and the thermal black oxide finish looks clean and consistent across all 300 pieces. These alloy steel screws feel sturdy for my press tool rebuild.

I needed a solid batch for a jig I'm building and these are exactly what I was looking for. The hex socket drive makes install much easier than a slotted head, and the threads cut clean every time.

The black oxide finish on these has held up perfectly through a week of clamping jig parts, no chips or rust. They drive in clean with a hex key, and all 300 came uniformly threaded. Exactly what I need for fixture building.