براغي ذات رأس مقبس 1-3/8-6 × 7 بوصة | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري

The partially threaded design made these perfect for my jig setup, and the black oxide finish has held up well in my shop. They fit snugly in the hex drive without any stripping, even under heavy torque.

Used them to secure a fixture on our milling table and the hex socket drive grabbed perfectly with no stripping at max torque. The partially threaded length gave just enough bite for the 7 inches of grip I needed.

The black oxide finish on these screws is perfectly uniform, and the hex socket drive engaged my Allen wrench without any slippage. They threaded cleanly into the tapped hole on my jig fixture and held tight under moderate torque.