USA‑Made Heavy Hex Structural Bolts – High‑Strength Structural Fasteners

Our USA‑manufactured heavy hex structural bolts are engineered for demanding structural connections in steel construction, bridgework, and infrastructure applications. Built to meet stringent ASTM standards, these American‑made bolts deliver exceptional tensile strength, shear resistance, and long‑term durability in critical load‑bearing assemblies. With a larger hex head for increased wrench contact and torque capacity, heavy hex structural bolts provide secure, high‑confidence fastening for structural steel joints and high‑stress environments.

Produced from premium carbon and alloy steels, these bolts offer consistent mechanical performance, clean threading, and superior reliability. They are designed for use with heavy hex nuts and hardened washers to achieve proper clamp load in bolted assemblies such as structural frames, columns, beams, and transportation structures.