براغي رأس سداسي 5/16-18 × 1-3/4" | صناعة أمريكية | سبائك فولاذ L9 زنك أصفر | خيط جزئي (100 / عبوة)

Bought these for a farm implement repair and the hex head seated perfectly with a standard socket, no stripping. The yellow zinc coating looks tough and should hold up well in damp conditions.

The threads caught perfectly on my tractor’s loader mount, and the yellow zinc coating looks like it’ll hold up fine outdoors. These bolts feel noticeably tougher than the hardware store stuff I’ve used before.

Used these to bolt down a steel workbench frame and the hex heads grabbed a socket perfectly, no stripping even with a impact driver. The yellow zinc finish held up fine against some light oil splashes, and having a full 100 in the box meant I didn't have to run to the store halfway through the job.