High-Temperature Washers (Companion to B16 Bolting)

While ASTM A193 B16 specifies bolting material, the required Fasteners used underneath B16 nuts are specialized High-Temperature Washers, often complying with the dimensional and metallurgical requirements of ASTM F436 for hardened flat washers but utilizing alloy steel that can withstand the severe operating temperatures (over $850^\circ\text{F}$ or $454∘C). These washers are essential for two primary reasons: load distribution across the flange face to prevent damage, and minimizing stress concentrations under the nut. In B16 applications, these washers must also possess high creep resistance to maintain their thickness and hardness over extended periods of high heat. Zeron Fasteners manufactures these washers with material and heat treatments carefully matched to the B16 bolting grade, ensuring they maintain the structural integrity and prevent stress corrosion or flange surface indentation in critical high-pressure, high-temperature assemblies.

Related Products