براغي رأس مقبس M18-2.5 × 110 مم | محرك مقبس سداسي | ملولبة جزئيًا | سبيكة فولاذ درجة 12.9 مطلية بالزنك (10 / عبوة)

The hex socket drive seated perfectly with my Allen key, no wobble or stripped edges even when torqued down on a fixture plate. The zinc plating has a clean, uniform finish and the partial threading grabbed exactly where I needed it for a tight clamp setup.

Installed these on a milling jig and the 12.9 alloy steel held torque perfectly without any stripping. The partially threaded design really helped with alignment in tight spots.

Used these for mounting a heavy-duty press brake die set and the 12.9-grade alloy steel held up without any deformation. The zinc plating made sliding them into tapped holes noticeably easier than with black oxide fasteners I've used before.