مسامير آلية سداسية 5/16-18 × 1-3/8" | فولاذ مطلي بالزنك | خيط جزئي (200 / عبوة)

Used these on a trailer hitch mount where the unthreaded grip length was exactly what I needed to keep things tight. The zinc coating has held up fine through some wet weather so far.

I needed some bolts for a machinery repair where the grip length was critical, and these 5/16-18 hex heads fit the unthreaded shank requirement perfectly. The zinc plating seems consistent and corrosion-resistant, though the package of 200 is almost too many for my small workshop.

These bolts fit perfectly into my frame jig, and the unthreaded grip length made aligning everything much easier. The zinc coating looks clean and adds a nice layer of protection. I'm really happy with the quality for the price.