براغي رأس مقبس M14-2 × 65 مم | رأس مسطح محرك سداسي | ملولبة جزئيًا | فئة 12.9 سبيكة فولاذ مطلية بالزنك (25 / عبوة)

Installed these on a jig for a production run and the 12.9 alloy steel held up perfectly under heavy torque. The flat head sits flush without any wobble, and the zinc plating looks clean even after a few days of use.

Used these for a machining fixture I've been building, and the hex socket drive made torquing them down in tight spots a breeze. The zinc plating is holding up nicely against the coolant splashes, no rust spots after two weeks of use. Threads cut clean into the tapped holes with zero binding.

Installed these in a jig at work and the partially threaded design held up perfectly under heavy clamping pressure. The zinc coating has a nice, even finish that resisted scuffing from my wrench.