براغي رأس سداسي مقاس 7/8-9 × 3-1/2 بوصة | صناعة أمريكية | سبيكة فولاذ درجة L9 مع زنك أصفر | ملولبة جزئيًا (15 / عبوة)

Threads are clean and they started perfectly in the tapped holes without any binding. The L9 steel has that serious heft you want when torquing down heavy machinery, and the partial thread gave me plenty of grip for a 3-inch flange.

The yellow zinc finish on these screws looks really clean and hasn't shown any rust yet after a few weeks on my shop press. The partial threading made it easy to adjust the tension on my assembly jig without the threads binding up completely.

These bolts fit perfectly into my tractor’s lift arm bracket, and the yellow zinc coating looks like it’ll resist rust well. The partial threading made it easy to start by hand before tightening with a socket.