براغي رأس أسطوانية M16-2 × 30 مم | رأس مسطحة محرك سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 بأكسيد أسود حراري (50 / عبوة)

The hex socket drive grabbed perfectly without any stripping, even when torquing them down into a steel jig. The black oxide finish seems durable and hasn't shown any wear after a week of assembly use.

These are the beefiest little bolts I've used in a while—the black oxide finish gives them a nice, consistent matte look that holds up well on my jig builds. The hex socket drive seated perfectly with my Allen key, and at class 12.9 strength, I don't worry about them stripping under heavy clamping p

Threaded smoothly all the way to the head, and the hex socket drive seated perfectly on my jig. Used them to secure a fixture on a milling table—tightened to spec without any stripping. Solid purchase for heavy-duty work.