براغي رأس مقبس مسطحة من HOLO-KROME 87205 M12-1.75 × 55mm | محرك سداسي | فولاد سبائكي مع أكسيد أسود حراري (50 / عبوة)

I needed M12 bolts for a jig assembly and these 55mm lengths fit perfectly, the hex socket drive made seating them in tight spots much easier.

The black oxide finish on these screws seems more consistent than the last batch I bought, and they threaded smoothly into my tooling fixture without any binding. Definitely met my expectations for precision work.

Installed these on a jig I'm building for a production run, and the socket drive made torquing them down in tight spots much easier than a hex head would have. The black oxide finish seems durable, no chipping around the drive despite some heavy wrenching.