5/8-18 X 6" 六角頭螺絲 | 美國製造 | 等級L9 合金鋼 黃鋅 | 部分螺紋 (25個/包)

These L9 bolts show no give at all when torquing down heavy equipment mounts; the hex heads gave my socket a solid bite. The yellow zinc finish is already proving to resist a shop's worth of grime and moisture.

The threads caught perfectly on my first try, and the yellow zinc coating looks like it'll hold up well in my shop. I used these to secure a heavy motor mount, and the Grade L9 steel didn't flex at all under torque.

I needed a heavy-duty bolt for a press repair, and these Grade L9 screws handled the load without any sign of strain. The partial threading made alignment a lot easier than I expected.