7/16-14 x 5" 六角頭螺絲 | 美國製造 | L9合金鋼黃鋅 | 部分螺紋 (25 / 包)

Finally, a set of cap screws that actually seat properly without stripping—the L9 alloy is noticeably tougher than the usual Grade 5 stuff. These hold torque way better on heavy equipment frames.

The yellow zinc finish on these hex heads has held up nicely in my shop, no chips or rust after a few weeks of regular use. The partial threading gives just the right grip when I'm bolting down heavy machinery, and the L9 steel feels rock solid.

The threads on these Grade L9 bolts are cut clean with no burrs, and the yellow zinc finish looks uniform across all 25. They torqued down smoothly into my fixture without any galling, which is exactly what I needed for this machinery setup.