براغي رأس سداسي 1/2-13 × 1 بوصة | صنع في الولايات المتحدة | فولاذ سبائكي PFC9 مطلي بالزنك الأصفر (50/عبوة)

Needed to replace some bolts on a heavy-duty press at work, and these threaded in perfectly with no binding. The hex head grabbed cleanly with a socket, and the yellow zinc coating looks like it'll hold up well.

Put these on a tractor attachment I'm fabricating, and the hex head drives cleanly with a socket every time. The yellow zinc has held up perfectly after a few days of rain, too.

Used these on a heavy-duty jig I'm building and the hex head grabbed perfectly with a socket wrench. The PFC9 alloy feels a lot tougher than the standard stuff I've grabbed from the hardware store.