ASTM F436

ASTM F436 covers the chemical and mechanical requirements for hardened washers in diameters ranging from 1/4″ to 4″ inclusive. These heat treated washers are for general purpose and structural use and are suitable for use with A325 and A490 structural bolts. Additionally, they are used with bolts per A449, A354, A193, A320, F1554 and whenever specified.