براغي رأس أسطواني M4-0.7 × 45 مم | رأس مسطح محرك سداسي داخلي | ملولبة جزئيًا | فئة 10.9 سبائك فولاذية مطلية بالزنك (400/عبوة)

Needed a batch of these for a jig fixture I was building, and the zinc plating on every single one looked clean and consistent. The partial thread gave just the right grip depth, and the 400 count means I have spares for the next project.

Thread engagement felt really solid when I tightened these into a tooling fixture, and the zinc plating on all 400 screws was consistent across every piece. The flat hex socket drove cleanly without any cam-out issues, which saved me time on a production run.

Bought these for a custom jig I was building, and the partially threaded shaft really helped with alignment. The zinc coating looks clean and they all torqued down without any issues.