براغي رأس سداسي 1/4-20 × 2-1/2 بوصة | فولاذ درجة 5 زنك أصفر | خيط جزئي (900 / عبوة)

Drove a whole rack of these into steel brackets and the hex heads didn't strip once with a socket. The yellow zinc finish is holding up far better than plain steel in my damp shop.

I needed a bulk supply for a repair project and these Grade 5 hex heads drive in smoothly with a socket. The yellow zinc coating looks consistent and should resist rust well.

These hex bolts fit the existing threads on my milling machine jig perfectly and the yellow zinc coating looks like it will hold up well against oil and grime. The partial threading gave me just enough smooth shank for alignment without having to use washers.