براغي ذات رأس كروي M6-1 × 50 مم | محرك سداسي داخلي | ملولبة بالكامل | فئة 12.9 سبيكة فولاذ مطلي بالزنك (200 / عبوة)

The hex socket drive seated perfectly on my Allen key with zero wobble, and all 200 came out of the package free of any oil or residue. Threaded them into a steel jig I’m building and they torqued down smoothly without stripping.

Button head design sits flush where clearance is tight, and the 12.9 grade alloy steel feels much stronger than the usual hardware store bolts. Used them for a jig I’m building and the hex drive engaged cleanly without stripping.

The 12.9 grade alloy steel feels noticeably tougher than standard bolts, and the zinc coating gives them a clean, consistent finish. Threads ran smooth into my jig without any binding, so installation was quick. Only wish the box included a few extras for inevitable drops.