براغي رأس أسطوانية M6-1 X 14mm | محرك سداسي داخلي | ملولبة بالكامل | فولاذ سبائكي درجة 12.9 مطلي بالزنك (400/عبوة)

These 12.9 grade screws held strong when I used them to replace the bolts on my milling machine's clamp set. The hex socket drive made installation quick with a standard Allen key, and every thread cut clean.

The zinc plating on these M6 screws is evenly applied and feels durable, and the 12.9 grade steel gives me confidence for my jig builds. I've already used half the pack in a precision assembly, and every single one threads smoothly without any burs.

Came in a sturdy box of 400, and every single screw has a clean zinc finish with crisp threads on the full length. The 12.9 alloy steel feels noticeably denser than the cheaper packs I've used before, and the hex socket engaged perfectly with my driver on all of them.