5/8-11 X 1-1/2" 六角頭螺絲 | 美國製造 | PFC9 合金鋼黃鋅 (25 入/包)

Needed a handful of extra-strong bolts for a frame repair, and the hex heads gave my socket a solid, no-slip grip. These feel tougher than the usual hardware store stuff, and the yellow zinc finish is a nice bonus.

Used these to secure a heavy machine base at the shop, and the hex heads let my socket grip perfectly without stripping. The yellow zinc coating on the PFC9 alloy steel seems tough enough to resist rust in our damp warehouse. A solid, well-made fastener that fit right the first time.

I needed some heavy-duty 5/8-11 bolts for a farm equipment repair, and these hex heads fit the socket perfectly. The USA-made alloy steel feels solid, and the yellow zinc coating looks like it will hold up well.