براغي رأس مقبس M5-0.8 × 30 مم | رأس مسطح بمقبس سداسي | ملولول بالكامل | صلب سبيكة فئة 10.9 معالج بأكسيد أسود حراري (400/عبوة)

Was pleasantly surprised by how consistent the threading is across all 400 screws - not a single one jammed during assembly. The black oxide finish held up well against minor scuffs while I was tightening them into a tooling fixture.

Used a full box of these on a jig build and every single one threaded clean without a single stripped head, even with a worn Allen key. The 10.9 rating gives me confidence they'll hold torque where softer stainless would've twisted off.

The hex socket drive grips the Allen key perfectly, no stripped heads halfway through tightening a batch. Used a handful for a jig build and the 10.9 alloy steel feels properly tough, the black oxide coating looks clean too. Four hundred of these in the box will last me a while.