براغي رأس سداسي 5/16-18 × 3 بوصة | فولاذ درجة 5 مع زنك أصفر | خيط جزئي (100 قطعة/عبوة)

I've been using these hex head cap screws for mounting equipment on a steel frame, and the grade 5 yellow zinc finish is holding up well without any rust after a few weeks. The partially threaded shank gives just the right grip for my assembly fixture.

The partial threading made it easy to get the first few turns started by hand before tightening with my socket wrench. These bolts held fast on a heavy-duty equipment mount I built last weekend.

Installed these on a trailer hitch bracket and the partial threading made it easy to get a tight fit without stripping. The hex head seated nicely with a standard wrench, and the yellow zinc finish hasn't shown any rust after a few weeks of rain.