براغي رأس مقبس 5/8-11 X 2-1/2" | محرك مقبس سداسي | رقعة نايلون | ملولبة جزئيًا | فولاذ سبائكي بأكسيد أسود حراري (25 / عبوة)

The black oxide finish on these screws looks great and seems durable, and the hex socket drove in cleanly with my Allen key. I used them to secure a jig on my mill table, and the nylon patch held firm without any loosening. Glad I picked this specific thread size for the job.

The nylon patch on these screws is a lifesaver, they held firm through a full shift at my jig setup without backing off a thread. The black oxide coating looks sharp and clean against the steel, too.

The thermal black oxide finish looks great on my machining fixture and the partial threading gives just the right grip for clamping. They drive in smooth with no stripping, and the nylon patch holds them snug even after a few removals.