براغي رأس سداسي 3/8-16 × 2-3/8" | فولاذ درجة 5 مطلي بالزنك الأصفر | ملولب جزئياً (100/عبوة)

I've been using these for assembling a hydraulic press frame, and the grade 5 hardness really handles the torque without stripping. The yellow zinc coating is holding up well despite some shop grime. Good grip with a socket too.

These bolts fit perfectly into my tractor's mower deck where I was replacing worn-out hardware. The yellow zinc coating seems to be holding up well against the grass and moisture so far.

The hex head on these Grade 5 bolts grabbed my socket perfectly, no slipping at all when I torqued them down on the assembly jig. The yellow zinc finish looks clean and should resist rust in the shop. Exactly what I needed for a solid hold on the equipment mount.