براغي رأس سداسية 3/8-16 X 1-1/4" | صناعة أمريكية | درجة L9 من سبائك الصلب مطلي بالزنك الأصفر | كاملة الخيوط (100 / عبوة)

Put these on a heavy-duty mower deck and they held tight even under constant vibration. The hex heads engaged perfectly with my socket, no stripping at all during installation.

The yellow zinc coating looks great and feels durable, and these fully threaded screws seated perfectly in my equipment frame. They drove in smoothly with a socket wrench, and the Grade L9 alloy steel gives me confidence in the hold.

I've been using these on a machine rebuild and the yellow zinc coating is holding up better than some cheaper screws I've tried. The Grade L9 steel feels solid under torque, and having a full hundred in the pack saved me a trip to the hardware store.