AS/NZS 2451:1998
Bolts, screws and nuts with British Standard Whitworth threads (rationalized series)
Specifies the dimensions for bolts and screws with British Standard Whitworth threads in diameters from 1/4 in to 6 in, and the material requirements for steel bolts, screws and nuts for general use.
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AS/NZS 2451:1998 BOLTS, SCREWS AND NUTS WITH BRITISH STANDARD WHITWORTH THREADS (RATIONALIZED SERIES)
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.3.1 Nominal length (of a hexagon bolt or screw)
1.3.2 Thread length (of a hexagon bolt)
1.3.3 Concentricity tolerance (of a bolt)
1.3.4 Symmetry tolerance (of a bolt or screw)
1.3.5 Thread runout (of bolts and screws with rolled threads)
1.3.6 Thread runout (of bolts and screws with cut threads)
1.3.7 Transition diameter
1.4 MARKING
1.5 DESIGNATION
SECTION 2 BOLTS AND SCREWS
2.1 SCOPE OF SECTION
2.2 METHOD OF MANUFACTURE
2.3 SHAPE, DIMENSIONS AND FINISH
2.3.1 General
2.3.2 Tolerance on length of hexagon bolts and screws
2.3.3 Ends of hexagon bolts and screws
2.3.4 Screw threads
2.3.5 Squareness, concentricity and symmetry of hexagon bolts and screws
2.3.6 Heads of hexagon bolts and screws
2.3.7 Shank
2.3.8 Finish
2.4 MATERIALS AND MECHANICAL PROPERTIES OF STEEL BOLTS AND SCREWS
2.4.1 Material
2.4.2 Mechanical properties
2.5 TESTING OF MECHANICAL PROPERTIES OF STEEL HEXAGON BOLTS AND SCREWS
SECTION 3 HEXAGON NUTS
3.1 SCOPE OF SECTION
3.2 METHOD OF MANUFACTURE
3.3 SHAPE AND DIMENSIONS
3.3.1 General
3.3.2 Screw threads
3.3.3 Chamfering
3.3.4 Countersinking
3.4 SQUARENESS OF THREADS TO BEARING FACE(S)
3.5 FINISH
3.5.1 General
3.5.2 Normal finish
3.5.3 Other finishes
3.6 MATERIALS AND MECHANICAL PROPERTIES OF STEEL NUTS
3.6.1 Material
3.6.2 Mechanical properties
APPENDIX A - METRIC EQUIVALENTS OF SPECIFIED REQUIREMENTS
TABLE A1 TOLERANCE ON NOMINAL LENGTH OF BOLTS AND SCREWS
TABLE A2 GENERALDIMENSIONSOFBOLTSANDSCREWS
TABLE A3 MECHANICAL PROPERTIES OF STEEL BOLTS AND SCREWS
TABLE A4 ULTIMATE TENSILE LOADS FOR STEEL BOLTS AND SCREWS
TABLE A5 WEDGE DIMENSIONS
TABLE A6 GENERAL DIMENSIONS OF HEXAGON NUTS
TABLE A7 MECHANICAL PROPERTIES OF STEEL NUTS
TABLE A8 PROOF LOADS OF STEEL NUTS
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AS/NZS 2451:1998 BOLTS, SCREWS AND NUTS WITH BRITISH STANDARD WHITWORTH THREADS (RATIONALIZED SERIES)
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.3.1 Nominal length (of a hexagon bolt or screw)
1.3.2 Thread length (of a hexagon bolt)
1.3.3 Concentricity tolerance (of a bolt)
1.3.4 Symmetry tolerance (of a bolt or screw)
1.3.5 Thread runout (of bolts and screws with rolled threads)
1.3.6 Thread runout (of bolts and screws with cut threads)
1.3.7 Transition diameter
1.4 MARKING
1.5 DESIGNATION
SECTION 2 BOLTS AND SCREWS
2.1 SCOPE OF SECTION
2.2 METHOD OF MANUFACTURE
2.3 SHAPE, DIMENSIONS AND FINISH
2.3.1 General
2.3.2 Tolerance on length of hexagon bolts and screws
2.3.3 Ends of hexagon bolts and screws
2.3.4 Screw threads
2.3.5 Squareness, concentricity and symmetry of hexagon bolts and screws
2.3.6 Heads of hexagon bolts and screws
2.3.7 Shank
2.3.8 Finish
2.4 MATERIALS AND MECHANICAL PROPERTIES OF STEEL BOLTS AND SCREWS
2.4.1 Material
2.4.2 Mechanical properties
2.5 TESTING OF MECHANICAL PROPERTIES OF STEEL HEXAGON BOLTS AND SCREWS
SECTION 3 HEXAGON NUTS
3.1 SCOPE OF SECTION
3.2 METHOD OF MANUFACTURE
3.3 SHAPE AND DIMENSIONS
3.3.1 General
3.3.2 Screw threads
3.3.3 Chamfering
3.3.4 Countersinking
3.4 SQUARENESS OF THREADS TO BEARING FACE(S)
3.5 FINISH
3.5.1 General
3.5.2 Normal finish
3.5.3 Other finishes
3.6 MATERIALS AND MECHANICAL PROPERTIES OF STEEL NUTS
3.6.1 Material
3.6.2 Mechanical properties
APPENDIX A - METRIC EQUIVALENTS OF SPECIFIED REQUIREMENTS
TABLE A1 TOLERANCE ON NOMINAL LENGTH OF BOLTS AND SCREWS
TABLE A2 GENERALDIMENSIONSOFBOLTSANDSCREWS
TABLE A3 MECHANICAL PROPERTIES OF STEEL BOLTS AND SCREWS
TABLE A4 ULTIMATE TENSILE LOADS FOR STEEL BOLTS AND SCREWS
TABLE A5 WEDGE DIMENSIONS
TABLE A6 GENERAL DIMENSIONS OF HEXAGON NUTS
TABLE A7 MECHANICAL PROPERTIES OF STEEL NUTS
TABLE A8 PROOF LOADS OF STEEL NUTS
AS/NZS 2451:1998
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.