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These standards from ANSI, ASME, ISO, SAE, and others address the materials, construction, and requirements for hex nuts for a variety of applications. This list addresses hex nuts that don't fit into previously mentioned categories.
This standard provides the dimensional requirements for inch coupling nuts from the nominal thread size 1/4 through 6 inches.
This SAE Aerospace Recommended Practice (ARP) defines the minimum across hexagon corner dimensions for fluid tube fittings and nuts. The ARP covers commonly specified inch and millimeter hexagon sizes. The purpose of this ARP is to define the minimum allowable diameter of coners for hexagons that are machined from round stock or for hexagon corners that are turned to facilitate manufacutirng, installation, or other purpose. Rounded hex corners in accordance with this ARP shall not be used in conjunction with safety wire hoses per SAE AS 1043.
This procurement specification covers alloy steel and corrosion and heat resistant steel free running metric nuts of the following types, styles and classes. a. Types: Hex nut plain, standard height; Hex nut plain, shear height; Hex nut slotted, standard height; Hex nut slotted, shear height b. Styles: Washer face; Double chamfered; Castellated c. Classes: 516 MPa axial strength, min (shear height nuts); 600 MPa axial strength, min (shear height nuts); 860 MPa axial strength, min; 1000 MPa axial strength, min