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  • BS 811:1950

    Current The latest, up-to-date edition.

    Specification for cycle (B.S.C.) threads (formerly known as C.E.I. threads)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  24-05-1950

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Cooperating organizations
    Foreword
    Specification
    1. Form of cycle thread
    2. Dimensions
    3. Classes of fit
    4. Stainless steel components
    5. Internal threads
    6. Tolerances on effective diameter, pitch and
         flank angles
    7. Designation of B.S. cycle threads
    Tables
    Cycle threads for bolts, nuts and similar applications
    1. Basic dimensions
    2. Bolts, Close class
    3. Bolts, Medium class
    4. Bolts, Free class
    5. Nuts, Close class
    6. Nuts, Medium class
    7. Nuts, Free class
    Cycle threads for spokes and nipples
    8. Basic dimensions
    9. Spokes, Medium class
    10. Nipples, Medium class
    Cycle threads for special applications
    11. Basic dimensions
    12. Male threads, Medium class
    13. Female threads, Medium class
    Appendices
    A. B.S. Whitworth form threads for bolts, nuts and
         similar applications
    B. Bases of tolerances for cycle threads
    C. Tolerances on pitch and angle in relation to
         tolerance on effective diameters

    Abstract - (Show below) - (Hide below)

    Form and dimensions for bolts, nuts, spokes, nipples and special applications. Table of limits and tolerances for threads, for bolts and nuts and for special applications.

    General Product Information - (Show below) - (Hide below)

    Committee GME/25
    Development Note Reviewed and confirmed by BSI, May 2009. (04/2009)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 3382-7:1966 Specification for electroplated coatings on threaded components Thicker platings for threaded components
    BS 3382-3&4(1965) : 1965 SPECIFICATION FOR ELECTROPLATED COATINGS ON THREADED COMPONENTS - NICKEL OR NICKEL PLUS CHROMIUM ON STEEL COMPONENTS - NICKEL OR NICKEL PLUS CHROMIUM ON COPPER AND COPPER ALLOY (INCLUDING BRASS) COMPONENTS
    BS 1936-1:1952 Undercuts and runouts for screw threads Inch screw threads
    BS 3382-1&2(1961) : 1961 SPECIFICATION FOR ELECTROPLATED COATINGS ON THREADED COMPONENTS - CADMIUM ON STEEL COMPONENTS - ZINC ON STEEL COMPONENTS
    BS 3382-5&6(1967) : 1967 SPECIFICATION FOR ELECTROPLATED COATINGS ON THREADED COMPONENTS - TIN ON COPPER AND COPPER ALLOY (INCLUDING BRASS) COMPONENTS - SILVER ON COPPER AND COPPER ALLOY (INCLUDING BRASS) COMPONENTS
    BS 919-2:1971 Specification for screw gauge limits and tolerances Gauges for screw threads of Whitworth and BA forms
    BS 919-2:2007 Screw gauge limits and tolerances Specification for gauges for screw threads of Whitworth and B.A. forms
    BS 2453:1973 Specification for steel wire for spokes
    BS 7371-12:2008 Coatings on metal fasteners Requirements for imperial fasteners
    08/30173610 DC : DRAFT FEB 2008 BS 7371-12 - COATINGS ON METAL FASTENERS - PART 12: REQUIREMENTS FOR IMPERIAL FASTENERS
    BS 1802:1951 Specification for steel spring washers for general engineering and automobile purposes

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 84:1956 Specification for parallel screw threads of Whitworth form
    View more information

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