براغي رأس كبس بمقبس سداسي | 1/2-13 × 7/8" | محرك سداسي | حبيبات نايلون | ملولبة بالكامل | فولاذ سبائكي مع أكسيد أسود حراري (50/عبوة)

I needed some precise fasteners for a jig build, and the hex socket drive made installation a breeze with no stripping. These fully threaded screws fit perfectly and the black oxide coating looks clean and professional.

The black oxide finish on these screws held up perfectly during a heavy-duty jig build, no stripping or galling even with repeat adjustments. Threads were clean and the nylon pellet stayed put after installation. Exactly what I needed for precision fixturing work.

I put these to use securing a jig fixture on my mill table, and the hex drive made installation in tight spots much easier. The black oxide finish has a nice, even consistency that seems like it will resist corrosion well.