براغي ذات رأس أسطواني بمقبس سداسي M6-1 × 30 مم | محرك سداسي داخلي | خيط كامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (200 قطعة/عبوة)

These 12.9-grade cap screws came out of the box with a clean, even zinc plating and threaded perfectly into my jig holes without any binding. The hex socket drive seated the driver snugly, and the full threading made tension adjustment a breeze. Exactly what I needed for a solid, repeatable build.

Bought these for a batch of precision fixtures and the hex socket drive made assembly so much easier than with slotted screws — the zinc coating looks clean and even on every single one, no duds in the pack.

I needed a bulk pack for some custom jig work and these 12.9 alloy steel screws are definitely tough—the zinc coating holds up well against rust.