براغي ذات رأس أسطواني M6-1 × 12 مم | محرك سداسي برأس منخفض | ملولبة بالكامل | فولاذ سبائكي فئة 8.8 (400/عبوة)

The hex drive gripped my driver bit securely without any cam-out, which was a relief during repetitive assembly work on a tooling fixture. The case hardening on these 8.8 alloy steel fasteners looks consistent throughout the batch.

Fit perfectly into the jig I'm building — the low head profile gives me just enough clearance under the fixture plate. These class 8.8 screws are noticeably tougher than the standard hardware I've been using.

Exactly what I needed for building a new jig setup—the fully threaded design grabs nicely in the alloy steel I’m working with. All 400 pieces look clean and uniform, no burs or defects out of the bag.