براغي رأس مقبس M14-2 X 30mm | محرك مقبس سداسي | ملولبة بالكامل | فئة 12.9 سبائك فولاذية مؤكسدة حرارياً باللون الأسود (50 / عبوة)

I needed a set of bolts for a heavy-duty fixture rebuild, and these class 12.9 screws threaded in smoothly without any galling. The black oxide finish also held up well against a bit of oil and shop dust during the test run.

I’ve used them to hold jigs together on a milling machine and they torqued down without any stripping, the hex socket drive seats cleanly. Class 12.9 alloy steel feels plenty rigid for the price, and the fully threaded length gave me good grip depth. They came in a solid plastic tube that kept them

The black oxide finish on these screws looks sharp and holds up well, and the hex socket drive made tightening them into my jig a breeze. Threads ran clean right out of the pack, no binding or galling. Exactly what I needed for a precision assembly.