براغي رأس سداسي 3/8-16 × 3-1/2 بوصة | صناعة أمريكية | فولاذ سبائكي PFC9 مطلي بالزنك الأصفر (50 / عبوة)

Threads were clean and uniform across all fifty pieces, no burrs or sloppy plating to fight with. I've torqued these into a steel fixture frame and they're holding solid, the PFC9 alloy feels a step above the usual hardware store stuff.

The hex head on these bolts grabbed my socket perfectly without any rounding. The PFC9 alloy steel feels incredibly strong, and the yellow zinc finish has a nice, even luster. Exactly what I needed for a heavy equipment repair.

The yellow zinc coating on these bolts is holding up nicely in my slightly damp shop, no rust yet after a few weeks. They threaded cleanly into my equipment frame without any binding or debris in the threads.