براغي رأس سداسي مقاس 1-1/4-7 × 4 بوصة | صناعة أمريكية | سبائك فولاذ PFC9 زنك أصفر (30 / عبوة)

These held up perfectly on our assembly line where we're tightening them with impact sockets—no stripping at all. The yellow zinc coating looks clean and hasn't shown any rust after a few weeks of use.

Putting together a large press and these hex heads grabbed perfectly with a standard socket. The yellow zinc coating is a nice touch, seems like it'll hold up well. Glad they're domestic steel.

I needed some heavy-duty bolts for a repair on an older milling machine, and these threaded in smoothly without any binding. The USA-made quality is evident in the precise threads and consistent hex head.