1/2-13 x 6" 六角頭螺絲 | 美國製造 | PFC9 合金鋼 黃鋅 (25 / 包)

The yellow zinc coating looks great and held up fine when I torqued them down with an impact wrench, no stripping or galling on the threads. Being PFC9 alloy steel, they feel substantially stronger than the typical hardware store bolts I've used before, and the hex heads fit a socket perfectly for t

Used these to bolt down a heavy workbench and the yellow zinc coating held up without a scratch under the wrench. The threads were clean and started by hand, which is more than I can say for the last batch I bought. Six-inch length gives plenty of grip for thick steel plates, and all 25 in the packa

These bolts drove perfectly into my press frame without any binding or shavings, and the yellow zinc finish feels tough and corrosion resistant. Exactly what I needed for a heavy duty equipment repair.