براغي رأس سداسي 1/4-20 × 3-1/2 بوصة | صناعة أمريكية | درجة L9 من سبائك الفولاذ مطلي بالزنك الأصفر | خيط جزئي (100/عبوة)

Used these on a heavy-duty farm gate hinge assembly, and the grade L9 alloy steel definitely holds up better than standard bolts. The partial threading helped get a snug fit without stripping anything, and the yellow zinc coating still looks good after a week of rain.

Bought these for a jig build and the partial threading is perfect for clamping—the threads grab cleanly without bottoming out. The hex heads are crisp, so a socket seats every time, and the L9 steel feels plenty stout for what I'm doing.

Yellow zinc finish looks great and hasn’t chipped even after cranking them down with an impact wrench on our jig. The hex head grips a socket perfectly, and the partial thread gives just the right bite for the steel plates I’m joining.