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About This Item


Full Description

This Standard is intended to cover the complete general and dimensional data for the various types of inch series square and hex nuts recognized as "American National Standard." Also included are appendices covering gaging of slots in slotted nuts, wrench openings for nuts, and formulas on which dimensional data are based. It should be understood, however, that where questions arise concerning acceptance of product, the dimensions in the Tables shall govern over recalculation by formula. The inclusion of dimensional data in this Standard is not intended to imply that all of the products described herein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.

Document History

  1. ASME B18.2.2-2010

    Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series)

    • Most Recent
  2. ASME B18.2.2-1987 (R2005)


    Square and Hex Nuts (Inch Series)

    • Historical Version