براغي رأس سداسي 7/16-20 × 2-1/2 بوصة | صناعة أمريكية | فولاذ سبائكي PFC9 مطلي بالزنك الأصفر (50 / عبوة)

These bolts threaded smoothly into the pre-tapped holes on my milling machine without any binding. The yellow zinc coating looks clean and even, and the hex heads hold up well under my impact wrench.

The hex heads let me get a solid bite with my socket wrench, and the yellow zinc coating looks clean and corrosion-resistant. These bolts threaded in smoothly without any binding, which I appreciate for a critical machine assembly.

These are exactly what I needed for reattaching a jig to my mill table. The PFC9 alloy steel feels plenty stout for the job, and the yellow zinc finish looks uniform with no bare spots. Even the hex heads drive cleanly with a socket, no stripped corners.