1/4-20 X 3" 六角頭螺絲 | 美國製造 | PFC9 合金鋼黃鋅 (100/包)

Pulled a few of these out for a jig I’m building and the threads cut clean with zero binding, even with a socket wrench. The 3-inch length gives plenty of grip for thicker brackets, and the hex head seats nicely in tight spots. Solid batch for the price.

The yellow zinc finish on these bolts is holding up perfectly in my slightly damp workshop, no rust after a week. I’ve already used a dozen to secure a motor mount, and the threads catch cleanly every time.

Finally, hex bolts that don't strip after one use—the PFC9 alloy feels noticeably tougher than the hardware store stuff. I used them to mount a steel bracket, and the yellow zinc coating looks solid too.