براغي رأس مقبس M8-1 X 16mm | محرك سداسي | كامل الخيوط | سبيكة فولاذ كلاس 12.9 مطلي بالزنك (200/عبوة)

These little cap screws threaded cleanly into every tapped hole I put them in, and the zinc coating looks uniform across all 200 pieces. The 12.9 alloy steel gives me confidence they'll hold up in my precision assemblies without stripping.

Needed a dozen for a heavy-duty jig build, and these threaded cleanly into tapped holes with no binding. The hex drive seated perfectly with the 5mm key, and the zinc finish looks like it'll resist shop grime well.

Just finished a machining fixture and these screws fit the countersunk holes perfectly. The 12.9 grade zinc plating is slightly grippier than expected, but that extra hold is welcome on the mill table.