براغي رأس سداسي 5/16-24 × 1/2 بوصة | صناعة أمريكية | سبيكة فولاذية درجة L9 بزنك أصفر | ملولبة بالكامل (100 / عبوة)

Put these on a stubborn farm implement bracket where lesser bolts kept snapping. The Grade L9 alloy steel threads engaged smoothly and the hex head grabbed firmly with a standard wrench. Overkill for most home projects, but exactly what I needed for this repair.

Needed a few for a heavy-duty jig assembly and the Grade L9 alloy steel held up perfectly under torque. The yellow zinc finish looks good too, no chips after tightening with a socket.

I was a little worried the L9 alloy steel would be too brittle for my heavy equipment repairs, but these hex cap screws torqued down smoothly without any snapping. The yellow zinc coating gives them a nice look and seems to hold up well against corrosion in damp shop conditions.