براغي رأس مقبس M16-2 × 150 مم | رأس مسطح محرك سداسي | ملولبة جزئيًا | فولاذ سبيكة فئة 12.9 مؤكسد أسود حراري (10 / عبوة)

The hex socket drive gripped the Allen key perfectly, no stripping even when I torqued them down hard on a machine base. The black oxide finish has a nice uniform look and so far hasn't shown a speck of rust in my damp shop. Exactly the precision I needed for a tooling fixture.

Used these to secure a heavy jig to my press table, and the Class 12.9 alloy steel held up perfectly under repeated load. The hex socket drive made installation straightforward with a standard Allen key, and the black oxide finish looks clean against the steel.

The partially threaded design made alignment a breeze on my precision tooling setup. These M16 bolts feel incredibly solid, and the black oxide finish gives them a nice, durable look.