براغي كاب مقبس M12-1.25 X 75mm | محرك مقبس سداسي | ملولب جزئيًا | فئة 12.9 سبيكة فولاذ مطلي بالزنك (50 / عبوة)

Had to swap out some bolts on a jig fixture, and these 12.9 alloy steel screws threaded in smoothly without binding. The zinc plating looks clean and consistent across all 50 pieces, which is a nice touch for the price.

Installed a full row of these into a steel fixture yesterday, and the hex socket drive seated perfectly with no stripping. The partially threaded design gave just the right grip for clamping two 75mm plates together, and at 12.9 hardness they feel rock-solid.

The zinc plating is holding up nicely on my jig builds, no marks after a week of clamping. Threads for the partially threaded section cut smoothly into my fixtures, and the 12.9 hardness feels solid. Price for fifty is fair.