ASTM F436
ASTM F436 hardened steel washers are precision-manufactured components designed to support high-strength bolted connections in structural and heavy-duty applications.
Produced from heat-treated carbon steel, these washers deliver exceptional hardness and strength, preventing embedding, galling, and surface deformation under high clamping loads. Their hardened construction ensures consistent load distribution and maintains bolt tension, even in demanding structural assemblies.
Commonly used with ASTM F3125 Grade A325 and A490 structural bolts, F436 washers are a critical element in steel-to-steel connections found in bridges, buildings, towers, and industrial structures. They are suitable for use under both the bolt head and nut, improving joint integrity and reducing the risk of loosening in high-stress or vibration-prone environments.
