If your project requires 4″ domestic heavy hex nuts, please give us a call! We are happy to help. Since 1981 Atlanta Rod has been manufacturing specialty and construction fasteners for construction projects all over the world. Finding large diameter domestic bolts and nuts can be a challenge. Atlanta Rod makes non-standard large diameter bolts and nuts in our Georgia plant everyday. In fact, that’s all we do. Just let us know what you need, and when you need it and we’ll make it as required. Our 4″ domestic heavy hex nuts are hot forged on 750 ton and 1,000 ton forging presses and threaded per your request. We frequently make 4″ heavy hex nuts to ASTM A194 and ASTM A563 specifications. We recently manufactured over 100 of the 4″ domestic hot dip galvanized A563 Grade A Heavy Nuts below in one week.