براغي رأس سداسية 5/16-24 X 7/8" | صنع في الولايات المتحدة | فولاذ درجة 8 زنك أصفر | كامل الخيوط (200 / عبوة)

I’ve swapped out cheaper bolts before—these grade 8 heads take a socket wrench without stripping, and the yellow zinc finish looks clean under the hood.

The threads are perfectly clean and the yellow zinc finish has a nice uniform look—no chips or rough edges across the whole box. I torqued a few down with a socket and the hex heads grabbed snug without stripping. Solid buy for the price.

Used these on a heavy-duty jig I’m building, and the Grade 8 steel with the yellow zinc held up perfectly under torque with no stripping. The threading is consistent all the way down, which made installation quick with a socket. Solid fasteners for any serious machinery work.