براغي رأس سداسي 3/8-16 × 4-1/2 بوصة | فولاذ درجة 5 أصفر زنك | خيط جزئي (50/عبوة)

I needed these for an engine mount repair and the partial threading gave me just the right grip depth. The yellow zinc coating looks clean and seems tough enough for the shop environment.

After finding the hex head drove smoothly with a socket, these grade 5 screws hold really well on my press jig, and the partial threading made alignment easier.

I needed some longer bolts for attaching a tow bar to a trailer frame, and the partial threading on these made it easy to get a solid bite without the threads binding up. The yellow zinc finish looked clean and should hold up fine against road grime.