براغي ذات رأس مقبس M6-1 × 75 مم | رأس مسطح مع مقبس سداسي | خيط جزئي | فئة 12.9 من سبائك الصلب مطلية بالزنك (100 / عبوة)

For a jig I’m building, these 75mm partially threaded screws gave me just the right grip without bottoming out. The zinc plating looks clean, and all 100 came with crisp hex sockets that seated the driver snugly. Class 12.9 hardness feels solid for the price.

Finally found decent M6 flat heads that grip well with the hex socket. I'm using these for a tooling fixture and the 12.9 alloy holds torque perfectly. The partially threaded length let me adjust stack heights without any issue.

I needed longer fasteners for a jig build, and these 75mm screws fit the bill perfectly. The partial threading held alignment well during assembly, and the zinc plating still looks clean after a week of use.