براغي رأس مقبس سداسي مسطحة M6-1 × 45 مم | محرك مقبس سداسي | خيط جزئي | فولاد سبائكي فئة 12.9 مؤكسد أسود حراري (200 / عبوة)

The black oxide finish is holding up way better than I expected after a week of clamping and unclamping in my jig setup. The hex socket drive grips cleanly with no stripping, and the 12.9 alloy steel feels properly rigid under torque.

The hex socket drive on these M6-1 x 45mm screws really makes installation quick with a standard Allen key. They feel solid and the black oxide finish looks good, though I wish the pack had a few more for the price. Perfect for my small machinery projects.

The partially threaded design makes seating these in jigs much easier than fully threaded bolts, and the 12.9 hardness gives me confidence under load. Only gripe is the black oxide coating chips a bit if you’re careless with a wrench.