7/8-9 × 3" براغي ذات رأس مقبس | محرك سداسي المقبس | حشوة نايلون | ملولبة جزئياً | فولاذ سبائكي مع طبقة أكسيد حراري أسود (10 / عبوه)

The black oxide finish on these screws holds up well in my jig setup without any rust issues. The hex socket drive makes installation quick and secure with a standard Allen key. Exactly what I needed for precision assembly work.

Put these on a custom jig I’ve been building, and the hex socket lets me get a solid bite even in tight spots. The black oxide finish looks tough and hasn’t shown any wear after a few assembly cycles.

The nylon pellet locking these in place is a real time-saver—I torqued them to spec and they haven't budged during the whole production run. The black oxide finish gives them a clean, uniform look on my fixture table, and the threads cut nicely into the tapped holes without any galling.