ASME B18.3-2003 (R2008)


Socket Cap, Shoulder, and Set Screws, Hex and Spline Keys (Inch Series)

standard by ASME International, 01/01/2003

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ASME B18.3, 2003 Edition – Socket Cap, Shoulder, and Set Screws, Hex and Spline Keys (Inch Series)

This Standard covers complete general and dimensional data for various types of hexagon and spline (luted) socket cap screws, shoulder screws, set screws, and hexagon and spline keys. Also included are appendices that provide specifications for hexagon and spline socket gages and gaging, tables showing applicability of keys and bits to various socket screws types and sizes, drill and couterbore sizes for socket head cap screws, and formulas on which dimensional data are based. However, 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 are stock production sizes. Consumers should consult with manufacturers concerning lists of stock production sizes.

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