Showing posts from July, 2020

Industrial Fasteners - Studs, Bolts Nuts - Standards

FASTENER A fastener is a mechanical device for holding two or more bodies in definite positions with respect to each other Most industrial fasteners are covered by two basic standards: one for materials and properties; the other, for dimensions and tolerances. Specifications for materials and properties are published primarily by the American Society for Testing and Materials (ASTM), with some other groups also publishing such standards for specific industry; like  Society of Automotive Engineers (SAE), American Petroleum Institute (API). Standards for dimensions and tolerances are issued primarily by the American National Standards Institute (ANSI) in cooperation with the American Society of Mechanical Engineers (ASME) and the Industrial Fasteners Institute (IFI). At NUBOTECK, ASTM standard with stricter control as defined by API is followed for material and its properties. For size, dimensions and tolerances NUBOTECK follows ASME standards. With compliance to these sta