5/8-11 X 1" 六角頭螺絲 | 美國製造 | L9合金鋼黃鋅鍍層 | 全螺紋 (25個/包)

Used these on a heavy-duty press fixture and the threads were clean and sharp right out of the package. The yellow zinc finish feels tough and should hold up well in a shop environment.

Went to torque these down on a jig I’m building and the hex head seated perfectly in my socket—zero stripping even at full force. Yellow zinc finish is already holding up better than the black oxide ones I had before.

Been using these L9 bolts on heavy equipment repairs and they hold up great under high torque loads. The yellow zinc finish on all 25 pieces was consistent and clean.