براغي رأس مقبس M5-0.8 × 16 مم | محرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي كلاس 12.9 مطلي بالزنك (400 / عبوة)

I've been through nearly all 400 of these on my current jig build and the plating is holding up nicely without any flaking, even where I've had to wrench them tight. The fully threaded 16mm length gives me plenty of bite in the aluminum fixtures I'm clamping down.

The hex socket drive seated perfectly with my Allen wrench, and the zinc plating on these alloy steel screws looks clean and durable. I used them for a small jig project and all 400 came neatly packed without any burrs or defects.

Used these for a precision fixture at work and the hex socket drive made installation quick with no stripping. The zinc plating has held up great in our shop environment too.