9/16-12 X 2-1/2" 六角頭螺絲 | 美國製造 | L9級合金鋼黃鋅 | 部分螺紋 (25 / 包裝)

The partially threaded design on these 9/16-12 bolts made tightening them down in tight spots much easier than fully threaded ones. The yellow zinc coating seems durable and the Grade L9 steel feels solid for heavy equipment assembly.

Just finished a big machine assembly job and these 9/16 bolts held perfectly under full torque. The yellow zinc coating looks solid and the partial threading made alignment much faster. Exactly what I needed for heavy equipment work.

Was a little worried about the partial thread length before ordering, but it’s exactly right for my jig fixture, and the hex heads seated cleanly with a socket. The yellow zinc finish looks tough and uniform across all 25, and the grade L9 steel feels reassuringly heavy for the price.