براغي رأس مقبس M16-2 × 120 مم | محرك سداسي | ملولبة جزئيًا | فئة 12.9 فولاذ سبائكي أسود حراري (25 / عبوة)

The hex socket drive fits my Allen wrench perfectly, making it easy to torque these into my jig assembly. For a 120mm partially threaded screw, the Class 12.9 alloy steel feels incredibly sturdy.

The black oxide finish looks noticeably more uniform than what I've gotten from other suppliers, and the hex socket drive is perfectly machined for a snug Allen key fit. Threads on all 25 pieces engaged cleanly without any binding when I test-fit them into a jig plate.

I needed a batch of high-strength bolts for a custom press jig, and the partially threaded shaft on these M16s gave me exactly the clamping length I needed without extra material getting in the way. The hex socket drive made tightening them in tight spots a breeze, and the black oxide finish already