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  • BS 1580-3:1965

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    SPECIFICATION FOR UNIFIED SCREW THREADS - DIAMETERS BELOW 1/4 IN AND LARGER

    Available format(s):  Hardcopy, PDF

    Superseded date:  31-12-2007

    Language(s):  English

    Published date:  01-01-1965

    Publisher:  British Standards Institution

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

    Co-operating organizations
    Foreword
    Specification
    1 Scope
    2 ISO/unified thread form
    3 Standard thread series
    4 Basic sizes
    5 Screw thread classes
    6 Tolerances allowances and limits of size
    7 Designation
    8 Gauges
    Tables
    39 Unified screw threads below 1/4 in diameter,
        standard series
    40 Unified screw threads below 1/4 in diameter,
        standard series. Limits of size
    Unified coarse screw thread UNC
    41 External threads (bolts). Class 2A
    42 Internal threads (nuts). Class 2B
    43 External threads (bolts). Class 3A
    44 Internal threads (nuts). Class 3B
    Unified fine screw threads UNF
    45 External threads (bolts). Class 2A
    46 Internal threads (nuts). Class 2B
    47 External threads (bolts). Class 3A
    48 Internal threads (nuts). Class 3B
    Unified extra fine screw threads UNEF
    49 External threads (bolts). Classes 2A and 3A
    50 Internal threads (nuts). Classes 2B and 3B
    Basic dimensions
    51 Unified coarse thread series, UNC
    52 Unified fine thread series, UNF
    53 Unified extra fine thread series, UNEF
    54 Thread data, unified thread form (24 to 80 t.p.i.)
    Appendix
        Metric equivalents

    Abstract - (Show below) - (Hide below)

    Covers unified screw threads from Number 0 (0.060 in diameter) to Number 12 (0.216 in diameter), referred to as 'numbered sizes'. Gives tolerances, allowances and limiting sizes for coarse (UNC) and fine (UNF) thread series and for Number 12-32 UNEF extra-fine diameter/pitch combination.

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

    Committee FME/9
    Development Note Supersedes BS 1580(1953) (07/2004) Reviewed and confirmed by BSI, November, 2004. (11/2004)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    BS 3041-12:1981 RADIO-FREQUENCY CONNECTORS - SPECIFICATION FOR R.F. COAXIAL CONNECTORS WITH SCREW COUPLING, UNMATCHED (TYPE UHF)
    BS A 227:1965 Specification for steel pan head bolts (short thread: Class 3A)
    DEFSTAN 02-862(PT5)/2(2007) : 2007 FASTENERS - PART 5: NON-FERROUS (SUBMARINE FIRST LEVEL QUALITY ASSURED)
    DEFSTAN 02-862(PT1)/2(2007) : 2007 FASTENERS - PART 1: GENERAL
    DEFSTAN 02-862(PT3)/2(2007) : 2007 FASTENERS - PART 3: NON-FERROUS FASTENERS
    BS 949-2:1992 Screwing taps Specification for unified ground thread taps. Manufacturing tolerances
    DEFSTAN 00-970(PT1)SEC4/5(2007) : 2007 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 1: COMBAT AIRCRAFT - SECTION 4: DESIGN AND CONSTRUCTION
    DEFSTAN 00-970(PT7)SEC4/1(2006) : 2006 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 7: ROTORCRAFT - SECTION 4: DETAIL DESIGN AND STRENGTH OF MATERIALS
    DEFSTAN 02-862(PT4)/2(2007) : 2007 FASTENERS - PART 4: FERROUS (SUBMARINE FIRST LEVEL QUALITY ASSURED)
    DEFSTAN 00-970(PT1)SEC4/4(2006) : 2006 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 1: COMBAT A/C - SECTION 4: DESIGN AND CONSTRUCTION
    BS 949-2:1979 Screwing taps Taps for Unified threads (and for the obsolescent threads of Whitworth and BA forms)
    DEFSTAN 66-2(PT2)/2(2007) : 2007 GAUGES, PRESSURE, DIAL INDICATING (BOURDON TUBE TYPE) - PART 2: INDUSTRIAL QUALITY TO COMMERCIAL SPECIFICATIONS
    BS 3A 212:1993 SPECIFICATION FOR CADMIUM-PLATED STEEL BOLTS, 55/65 TONF/IN[2] (UNIFIED HEXAGONS, 3A UNIFIED THREADS AND CLOSE TOLERANCE SHANKS)
    BS 1981:1991 Specification for unified machine screws and machine screw nuts
    BS 1157:1975 Recommendations for tapping drill sizes for use with fluted taps
    BS 4999-147:1988 GENERAL REQUIREMENTS FOR ROTATING ELECTRICAL MACHINES - SPECIFICATIONS FOR DIMENSIONS OF BRUSHES AND BRUSH HOLDERS FOR ELECTRICAL MACHINERY
    BS A 226:1965 SPECIFICATION FOR STEEL HEXAGON HEAD BOLTS (SHORT THREAD: CLASS 3A)
    BS 1127-5:1990 SCREWING DIES AND DIENUTS - SPECIFICATION FOR DIMENSIONS OF HEXAGONDIENUTS
    BS 3G 100-2.1:1973 AEROSPACE SERIES - SPECIFICATION FOR GENERAL REQUIREMENTS FOR EQUIPMENT FOR USE IN AIRCRAFT - PART 2: ALL EQUIPMENT - SECTION 1: CONSTRUCTION
    BS 2A 122; 2A 123; 2A 124:1981 Specification for clinch nuts (Unified threads) for aircraft
    BS 949-1:1976 Screwing taps Specification for taps for ISO metric threads
    BS 3934-1:1992 MECHANICAL STANDARDIZATION OF SEMICONDUCTOR DEVICES - RECOMMENDATIONS FOR THE PREPARATION OF DRAWINGS OF SEMICONDUCTOR DEVICES
    BS EN 31253:1996 LASERS AND LASER-RELATED EQUIPMENT - LASER DEVICE - MECHANICAL INTERFACES
    BS 5590:1978 Specification for screw thread metric series measuring cylinders
    BS 7403-13:1991 FULL-FLOW LUBRICATING OIL FILTERS FOR INTERNAL COMBUSTION ENGINES - SPECIFICATION FOR DIMENSIONS OF SPIN-ON FILTERS
    BS EN 122200:1995 HARMONIZED SYSTEM OF QUALITY ASSESSMENT FOR ELECTRONIC COMPONENTS - SECTIONAL SPECIFICATION - RADIO FREQUENCY COAXIAL CONNECTORS - SERIES TNC
    BS 6578-2:1985 LARYNGOSCOPIC FITTINGS - SPECIFICATION FOR SCREW THREADS FOR MINIATURE ELECTRIC LAMPS AND SOCKETS
    BS 6913-1:1989 OPERATION AND MAINTENANCE OF EARTH-MOVING MACHINERY - GUIDE TO COMMON MAINTENANCE AND ADJUSTMENT SERVICE TOOLS
    BS 6913-10:1994 OPERATION AND MAINTENANCE OF EARTH-MOVING MACHINERY - SPECIFICATION FOR DRAIN, FIZZ AND LEVEL PLUGS

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

    BS 3382-1&2(1961) : 1961 SPECIFICATION FOR ELECTROPLATED COATINGS ON THREADED COMPONENTS - CADMIUM ON STEEL COMPONENTS - ZINC ON STEEL COMPONENTS
    BS 93:1951 SPECIFICATION FOR BRITISH ASSOCIATION (B.A.) SCREW THREADS WITH TOLERANCES FOR SIZES 0 B.A. TO 16 B.A.
    BS 919-1:1960 SPECIFICATION FOR SCREW GAUGE LIMITS AND TOLERANCES - GAUGES FOR SCREW THREADS OF UNIFIED FORM
    BS 1580-1&2(1962) : 1962 SPECIFICATION FOR UNIFIED SCREW THREADS - DIAMETERS 1/4 INCH AND LARGER
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