براغي رأس سداسية 1-1/2-6 × 4 بوصة | صناعة أمريكية | درجة L9 من سبائك الفولاذ مطلي بالزنك الأصفر | ملولبة بالكامل (5 / عبوة)

I was skeptical about the yellow zinc finish holding up on these bolts, but after tightening them down on my press table, they haven't shown a speck of rust. The L9 alloy steel feels seriously tough for the job.

The full threading on these L9 alloy screws is a huge time-saver when you need maximum grip in deep assemblies, and the yellow zinc coat held up fine during my install. Solid USA-made quality, worth the few extra bucks for critical machinery work.

The yellow zinc finish on these is flawless, and the threads are cut so cleanly that they drove in straight with zero binding. I’ve already used three of the five on a jig frame, and the L9 steel feels like it could outlast the machine it’s holding together.