ASME B18-16.4 pdf download Serrated Hex Flange Locknuts 90,000 psi (Inch Series) SCOPE This Standard covers the general, dimensional, andmechanical performance requirements for low strengthcarbon steel, case hardened, regular and large serratedflange locknuts (inch series), recognized as AmericanNational Standard. 2 COMPARISON TO ISO STANDARDS There is no inch series ISO standard for these productsat this time. 3 TERMINOLOGY For definitions...