براغي رأس سداسية داخلية M5-0.8 X 20mm | رأس زر بمحرك سداسي داخلي | خيط كامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (400/عبوة)

The hex socket drive grips my Allen key perfectly with zero stripping, and the zinc plating on these 12.9 alloy steel screws looks clean and uniform across all 400 pieces. They threaded smoothly into my precision assembly without any binding, which is exactly what I needed for the torque I was apply

Installing these on a jig I’m building, the hex drive seated perfectly without any stripping. The zinc plating looks clean and even across all 400 pieces.

Full thread engagement across those 20mm is flawless, and the zinc plating’s held up perfectly through three assembly/disassembly cycles on my jig. Bought the 400-pack for a production run, and every single one’s been consistent so far.