براغي رأس سداسي 1/2-13 × 5-1/2" | صناعة أمريكية | درجة L9 من سبائك الفولاذ مطلي بالزنك الأصفر | خيط جزئي (100/عبوة)

The yellow zinc coating on these bolts resisted my grimy shop hands better than any black oxide fastener ever has. They threaded smoothly into my equipment base and held solid once torqued. For a hundred-pack of USA-made Grade L9, this is a no-brainer.

I was able to torque these down to spec without any stripping or deformation, which is exactly what I needed for a heavy equipment frame repair. The partial threading made alignment in tight spots much simpler than a fully threaded bolt would have.

The yellow zinc finish on these L9 bolts looks quality, and the partially threaded design made aligning them in that tight engine mount spot way easier. They torqued down solid with no hint of stripping.