براغي رأس أسطوانية بمقبس سداسي M12-1.75 × 90 مم | رأس مسطح بمحرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي فئة 12.9 مطلي بالزنك (50 / عبوة)

I work on tooling for a living and these M12 socket cap screws bite into the hex driver perfectly without slipping. The 90mm length is just right for clamping thick jig components, and the zinc plating has held up well in my shop.

The hex socket drive made installation into my machine tooling much easier than standard hex bolts, and the zinc plating looks clean. These 90mm screws feel robust for the precision assemblies I'm working on, and the partial threading is a nice touch for clamping force.

Installed these in a jig I’m building for work and the partial threading grabbed cleanly without stripping. Zinc plating looks solid too, no chips or flakes out of the bag.