براغي ذات رأس مقبس M12-1.25 × 40 مم | محرك سداسي | ملولبة بالكامل | فولاذ سبائكي من الفئة 12.9 مطلي بالزنك (50 / عبوة)

Installed these on a hydraulic press jig and the Class 12.9 hardness held up perfectly under constant load. The zinc plating looks clean and feels even, no chips or rough edges out of the box.

Used them to rebuild a fixture at the shop and the 12.9 alloy steel took the torque without a hint of stripping. The zinc plating held up fine even with coolant splashing on them all week. Fifty in a pack means I've got spares for the next job.

The hex socket drive made tightening these into my jig frame a breeze with my Allen key. They're fully threaded and the zinc plating looks uniform across all 50 pieces, which should help prevent rust in my shop.