7/16-14 X 3" 六角頭螺絲 | 美國製造 | PFC9合金鋼 黃鋅 (50 / 包)

Installed these on a heavy-duty conveyor frame and they torqued down evenly without any galling. The yellow zinc finish looks clean and the alloy steel feels noticeably tougher than the standard hardware I've used before.

Tightened these onto a metal press I'm rebuilding, and the hex head grabbed perfectly with a socket wrench. The yellow zinc finish looks clean and should resist corrosion well. USA-made steel gives me confidence they won't strip under heavy torque.

The yellow zinc finish on these is flawless, no chips or dull spots across the whole bag. I torqued a few to spec on a repair stand and the hex head held the socket perfectly without any rounding. Solid batch, will be ordering again.