براغي ذات رأس أسطواني M10-1.5 X 220mm | محرك سداسي | خيط جزئي | فئة 12.9 سبائك فولاذية مؤكسدة حرارياً باللون الأسود (25 / عبوة)

Installed these in a jig for a production run and the 12.9 alloy steel held up perfectly under heavy torque without any distortion. The partially threaded section made alignment a breeze.

The black oxide finish looks more uniform than I expected for the price, and the threads on all 25 matched tension when I torqued them into my jig. Length is spot-on and the hex socket drive seated cleanly without any wobble.

Needed a set of long cap screws for a custom jig I'm building, and these 220mm ones fit perfectly without any wobble. The hex socket drive gripped well without stripping. They feel substantial enough for heavy tooling work.