براغي رأس أسطواني بمقبس سداسي M12-1.75 X 20mm | محرك مقبس سداسي | ملولبة بالكامل | فئة 12.9 من سبائك الصلب مطلية بالزنك (50 / عبوة)

Had to swap out stripped bolts on a jig at work, and these fit perfectly with no slop. The 12.9 alloy feels noticeably harder than the standard 8.8s I’d been using.

Was putting together a tooling fixture and these M12s seated perfectly with no binding. The 12.9 alloy steel feels noticeably tougher than standard hardware store bolts I’ve used before.

The hex socket drive seated perfectly with my Allen key, and the zinc plating looks clean and uniform across all 50 pieces. Threads ran smooth into my jig plate without any galling, which is exactly what I needed for the precision assembly I'm working on. Solid buy for the price.