5/8-11 X 1-3/4" 六角頭螺絲 | 5級鋼黃鋅 | 全螺紋 (25顆/包)

I was worried the yellow zinc might rub off, but the finish is holding up perfectly after torquing them down on my equipment skids. The hex head gave me a solid bite with a socket, no stripping at all.

Used these to bolt down a heavy press at work and the fully threaded design gave me plenty of grip in the tapped holes. The yellow zinc coating looks clean and seems like it'll resist rust in my shop environment.

The threads cut cleanly and the yellow zinc finish looks uniform across all 25 pieces, which is what I expect from grade 5 hardware. Only gripe is the lack of a reusable tray, but that's minor when the hex heads seat so well with a socket.