1/4-20 X 1" 六角頭螺絲 | 美國製造 | L9級合金鋼黃鋅 | 全螺紋（100/包）

The yellow zinc coating is tough and uniform across all 100 pieces, and the L9 alloy steel threads cut cleanly into my equipment jigs without any binding. I’ve used cheaper bolts before, but these feel noticeably more solid under a wrench, and the fully threaded length is perfect for locking down sp

These hold beautifully with a standard socket; the hex heads are crisp and the yellow zinc finish looks clean. I used them to secure a jig on my mill table and they torqued down evenly without any binding. Exactly what I needed for heavy-duty assembly work.

Installed a dozen of these on a heavy-duty jig and they torqued down perfectly without any stripping. The yellow zinc coating has a nice even finish and the threads are clean and sharp.