HOLO-KROME 64062 براغي ذات رأس أسطواني 5/16-18 × 1 بوصة | محرك سداسي | فولاذ سبائكي مع أكسيد أسود حراري (50 / عبوة)

Installed these on a milling machine jig and the hex socket drive made tightening in tight spots effortless. The 5/16-18 threads matched perfectly and the black oxide finish looks clean and professional.

The black oxide finish on these screws gave my jig a clean, professional look, and they threaded smoothly into pre-tapped holes without any binding. Exactly what I needed for a precision assembly project.

Used these on a small jig I was building and the black oxide finish held up well against minor abrasion. The hex drive seated perfectly without any stripping, even at higher torque.