براغي رأس مقبس M16-1.5 × 50 مم | محرك مقبس سداسي | خيط كامل | فولاذ سبائكي فئة 12.9 بأكسيد حراري أسود (25 / عبوة)

The hex socket drive gripped perfectly with my Allen key, no stripping or slippage even when torquing them down on a heavy jig. 25 pieces in the pack is a solid value straight out of the box. Exactly what I needed for precision assemblies.

Used these to secure the mounting brackets on a heavy jig, and the hex socket drive made installation a breeze even in tight spaces. The 12.9 alloy steel feels seriously tough, way stronger than the standard bolts I had before.

The black oxide finish on these screws looks professional and resists scratching during assembly. Had to replace some old bolts on a milling jig, and the 12.9 grade alloy steel handles torque well without stripping. Exactly what I needed for heavy-duty fixture work.