7/8-9 X 3 英吋六角頭螺絲 | 美國製造 | L9 合金鋼黃鋅 | 部分螺紋 (15 顆/包)

Used a few of these to bolt down a heavy motor mount and the hex head held up well under good torque without stripping. The yellow zinc finish seems evenly applied and should resist rust in a shop environment.

The threads cut clean and the yellow zinc finish looks uniform across all 15 pieces, no duds in the batch. I torqued one down on a machine mount and the hex head gripped perfectly with a socket.

Installed these on a heavy-duty press jig and the hex head held torque perfectly without rounding. The yellow zinc coating looks clean and industrial.