براغي رأس سداسي مقاس 1/4-20 × 1-1/2" | صناعة أمريكية | سبائك فولاذية Grade L9 زنك أصفر | خيط جزئي (100 / عبوة)

Had a stripped screw on an old machine that nothing else would grab, but these L9 alloy steel screws bit in tight and held perfectly. The yellow zinc coating looks like it'll resist rust way better than the hardware store stuff.

The hex heads fit my socket perfectly without slipping, and the yellow zinc finish adds a nice layer of corrosion resistance for outdoor equipment. Perfectly consistent threading too, no binding halfway down.

I needed partially threaded bolts for a vibration-prone assembly, and these Grade L9 steel ones held tight without loosening. The yellow zinc coating looks good and the hex head fit my socket perfectly.