AS/NZS 1252.1:2016
High-strength steel fastener assemblies for structural engineering - Bolts, nuts and washers - Part 1: Technical requirements
Specifies the dimensional, material and marking requirements for steel bolt assemblies comprising steel bolts of property class 8.8, steel nuts of property class 8 with ISO metric coarse pitch series threads, in diameters from 12 mm to 36 mm, and associated hardened and tempered steel washers intended for use in steel structures.
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AS/NZS 1252.1:2016 HIGH-STRENGTH STEEL FASTENER ASSEMBLIES FOR STRUCTURAL ENGINEERING-BOLTS, NUTS AND WASHERS...
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Assembly
1.4.2 Assembly lot or assembly batch
1.4.3 Concentricity tolerance
1.4.4 Distributor
1.4.5 Factory production control (FPC)
1.4.6 Full tensioning
1.4.7 Grip length
1.4.8 Heat
1.4.9 HR bolting system
1.4.10 HV bolting system
1.4.11 Inspection documents (for fasteners)
1.4.12 k-class
1.4.13 Manufacturer (fastener)
1.4.14 Manufacturing lot or manufacturing batch
1.4.15 Manufacturing lot number
1.4.16 May
1.4.17 Nominal length (ℓ)
1.4.18 Partial tensioning
1.4.19 Preloading
1.4.20 Purchaser
1.4.21 Shall
1.4.22 Should
1.4.23 Supplier
1.4.24 Symmetry tolerance
1.4.25 Thread length (b)
1.4.26 Thread run out
1.4.27 Trace lot number
1.4.28 Transition diameter (da)
1.4.29 Type testing
1.4.30 Unthreaded shank length (?s)
1.5 ALTERNATIVE ASSEMBLY TYPE
1.6 ADDITIONAL ASSEMBLY TYPE
1.7 MARKING
1.7.1 Bolts
1.7.2 Nuts
1.7.3 Washers
1.7.4 Alternative bolt assembly type
1.7.5 Additional bolt assembly type
1.8 DESIGNATION
1.8.1 Bolts
1.8.2 Nuts
1.8.3 Washers
1.8.4 Alternative bolt assembly type and additional bolt assembly type
1.9 PRODUCT REQUIREMENTS
1.9.1 General
1.9.2 Dimensions, tolerances, materials and mechanical properties
1.9.3 Galvanized nut threading process
1.9.4 Finish and coating
1.9.5 Functional characteristics of the assembly
1.9.6 Delivery conditions
SECTION 2 HIGH-STRENGTH STEEL BOLTS
2.1 SCOPE OF SECTION
2.2 METHOD OF MANUFACTURE
2.3 SHAPE, DIMENSIONS AND FINISH
2.3.1 Head
2.3.2 Length
2.3.3 Ends
2.3.4 Screw threads
2.3.5 Thread length (b)
2.3.6 Squareness, concentricity and symmetry
2.3.7 Chamfering and washer facing
2.3.8 Shank
2.3.9 Underhead fillet
2.3.10 Finish
2.4 MATERIALS AND MECHANICAL PROPERTIES
SECTION 3 HIGH-STRENGTH STEEL NUTS
3.1 SCOPE OF SECTION
3.2 METHOD OF MANUFACTURE
3.3 SHAPE, DIMENSIONS AND FINISH
3.3.1 General
3.3.2 Tolerances
3.3.3 Squareness and symmetry
3.3.4 Chamfering, washer facing and countersinking
3.3.5 Finish
3.4 MATERIAL AND MECHANICAL PROPERTIES
SECTION 4 FLAT ROUND WASHERS
4.1 SCOPE OF SECTION
4.2 METHOD OF MANUFACTURE
4.3 SHAPE, DIMENSIONS AND FINISH
4.3.1 Shape and dimensions
4.3.2 Flatness
4.3.3 Finish
4.4 MATERIAL AND MECHANICAL PROPERTIES
SECTION 5 BOLT ASSEMBLIES
5.1 SCOPE OF SECTION
5.2 GENERAL
5.3 FUNCTIONAL CHARACTERISTICS OF THE BOLT ASSEMBLY
5.3.1 General
5.3.2 Minimum bolt tension force
5.3.3 Minimum nut rotation
5.3.4 Torque-tension relationship
SECTION 6 IDENTIFICATION, CERTIFICATION AND TESTING
6.1 SCOPE OF SECTION
6.2 GENERAL
6.2.1 Availability of test certificates
6.2.2 Transmission of test certificates
6.3 IDENTIFICATION
6.4 TESTING AND TEST REPORTS
6.4.1 General
6.4.2 Minimum requirements for test reports
6.5 TESTING OF DIMENSIONAL REQUIREMENTS
6.5.1 Bolts
6.5.2 Nuts
6.5.3 Washers
6.6 TESTING OF MECHANICAL PROPERTIES
6.6.1 Bolts
6.6.2 Nuts
6.6.3 Washers
6.7 TESTING OF FUNCTIONAL CHARACTERISTICS
APPENDIX A - A DISCUSSION OF THE BASIS FOR HR AND HV SYSTEM TYPES IN THE EN 14399 SERIES
A1 CONTEXT
A2 THE HR (BRITISH/FRENCH) SYSTEM
A3 THE HV (GERMAN) SYSTEM
A4 COMPARING THE SYSTEM BEHAVIOUR
A5 AUSTRALIAN AND NEW ZEALAND STANDARDS CONTEXT
APPENDIX B - PRODUCT CONFORMITY
B1 SCOPE OF APPENDIX
B2 INITIAL TYPE TESTING
B2.1 General
B2.2 Minimum sampling and testing plan
B3 FACTORY PRODUCTION CONTROL
B3.1 General
B3.2 Manufacturing controls
B3.3 Production testing
B4 NONCONFORMING PRODUCT
B4.1 General
B4.2 Retests
B5 DOCUMENTATION
APPENDIX C - PURCHASING GUIDELINES
C1 GENERAL
C2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
C3 INSPECTION
APPENDIX D - ASSEMBLY TESTING FOR FASTENERS
D1 GENERAL
D2 TEST ASSEMBLY
D3 BASIS FOR THE TEST
D4 BASIC ASSEMBLY TEST
D4.1 Test apparatus
D4.2 Test assemblies
D4.3 Test set-up
D4.4 Test procedure
D4.5 Evaluation of test results
D5 EXTENDED ASSEMBLY TEST
D6 TEST REPORT
APPENDIX E - SQUARE TAPER WASHERS
E1 SCOPE OF APPENDIX
E2 DIMENSIONS
E3 MATERIAL AND HEAT TREATMENT
E4 FINISH
Amendments
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References
Mechanical properties of fasteners made of carbon steel and alloy steel - Part 2: Nuts with specified property classes - Coarse thread and fine pitch thread
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AS/NZS 1252.1:2016 HIGH-STRENGTH STEEL FASTENER ASSEMBLIES FOR STRUCTURAL ENGINEERING-BOLTS, NUTS AND WASHERS...
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Assembly
1.4.2 Assembly lot or assembly batch
1.4.3 Concentricity tolerance
1.4.4 Distributor
1.4.5 Factory production control (FPC)
1.4.6 Full tensioning
1.4.7 Grip length
1.4.8 Heat
1.4.9 HR bolting system
1.4.10 HV bolting system
1.4.11 Inspection documents (for fasteners)
1.4.12 k-class
1.4.13 Manufacturer (fastener)
1.4.14 Manufacturing lot or manufacturing batch
1.4.15 Manufacturing lot number
1.4.16 May
1.4.17 Nominal length (ℓ)
1.4.18 Partial tensioning
1.4.19 Preloading
1.4.20 Purchaser
1.4.21 Shall
1.4.22 Should
1.4.23 Supplier
1.4.24 Symmetry tolerance
1.4.25 Thread length (b)
1.4.26 Thread run out
1.4.27 Trace lot number
1.4.28 Transition diameter (da)
1.4.29 Type testing
1.4.30 Unthreaded shank length (?s)
1.5 ALTERNATIVE ASSEMBLY TYPE
1.6 ADDITIONAL ASSEMBLY TYPE
1.7 MARKING
1.7.1 Bolts
1.7.2 Nuts
1.7.3 Washers
1.7.4 Alternative bolt assembly type
1.7.5 Additional bolt assembly type
1.8 DESIGNATION
1.8.1 Bolts
1.8.2 Nuts
1.8.3 Washers
1.8.4 Alternative bolt assembly type and additional bolt assembly type
1.9 PRODUCT REQUIREMENTS
1.9.1 General
1.9.2 Dimensions, tolerances, materials and mechanical properties
1.9.3 Galvanized nut threading process
1.9.4 Finish and coating
1.9.5 Functional characteristics of the assembly
1.9.6 Delivery conditions
SECTION 2 HIGH-STRENGTH STEEL BOLTS
2.1 SCOPE OF SECTION
2.2 METHOD OF MANUFACTURE
2.3 SHAPE, DIMENSIONS AND FINISH
2.3.1 Head
2.3.2 Length
2.3.3 Ends
2.3.4 Screw threads
2.3.5 Thread length (b)
2.3.6 Squareness, concentricity and symmetry
2.3.7 Chamfering and washer facing
2.3.8 Shank
2.3.9 Underhead fillet
2.3.10 Finish
2.4 MATERIALS AND MECHANICAL PROPERTIES
SECTION 3 HIGH-STRENGTH STEEL NUTS
3.1 SCOPE OF SECTION
3.2 METHOD OF MANUFACTURE
3.3 SHAPE, DIMENSIONS AND FINISH
3.3.1 General
3.3.2 Tolerances
3.3.3 Squareness and symmetry
3.3.4 Chamfering, washer facing and countersinking
3.3.5 Finish
3.4 MATERIAL AND MECHANICAL PROPERTIES
SECTION 4 FLAT ROUND WASHERS
4.1 SCOPE OF SECTION
4.2 METHOD OF MANUFACTURE
4.3 SHAPE, DIMENSIONS AND FINISH
4.3.1 Shape and dimensions
4.3.2 Flatness
4.3.3 Finish
4.4 MATERIAL AND MECHANICAL PROPERTIES
SECTION 5 BOLT ASSEMBLIES
5.1 SCOPE OF SECTION
5.2 GENERAL
5.3 FUNCTIONAL CHARACTERISTICS OF THE BOLT ASSEMBLY
5.3.1 General
5.3.2 Minimum bolt tension force
5.3.3 Minimum nut rotation
5.3.4 Torque-tension relationship
SECTION 6 IDENTIFICATION, CERTIFICATION AND TESTING
6.1 SCOPE OF SECTION
6.2 GENERAL
6.2.1 Availability of test certificates
6.2.2 Transmission of test certificates
6.3 IDENTIFICATION
6.4 TESTING AND TEST REPORTS
6.4.1 General
6.4.2 Minimum requirements for test reports
6.5 TESTING OF DIMENSIONAL REQUIREMENTS
6.5.1 Bolts
6.5.2 Nuts
6.5.3 Washers
6.6 TESTING OF MECHANICAL PROPERTIES
6.6.1 Bolts
6.6.2 Nuts
6.6.3 Washers
6.7 TESTING OF FUNCTIONAL CHARACTERISTICS
APPENDIX A - A DISCUSSION OF THE BASIS FOR HR AND HV SYSTEM TYPES IN THE EN 14399 SERIES
A1 CONTEXT
A2 THE HR (BRITISH/FRENCH) SYSTEM
A3 THE HV (GERMAN) SYSTEM
A4 COMPARING THE SYSTEM BEHAVIOUR
A5 AUSTRALIAN AND NEW ZEALAND STANDARDS CONTEXT
APPENDIX B - PRODUCT CONFORMITY
B1 SCOPE OF APPENDIX
B2 INITIAL TYPE TESTING
B2.1 General
B2.2 Minimum sampling and testing plan
B3 FACTORY PRODUCTION CONTROL
B3.1 General
B3.2 Manufacturing controls
B3.3 Production testing
B4 NONCONFORMING PRODUCT
B4.1 General
B4.2 Retests
B5 DOCUMENTATION
APPENDIX C - PURCHASING GUIDELINES
C1 GENERAL
C2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
C3 INSPECTION
APPENDIX D - ASSEMBLY TESTING FOR FASTENERS
D1 GENERAL
D2 TEST ASSEMBLY
D3 BASIS FOR THE TEST
D4 BASIC ASSEMBLY TEST
D4.1 Test apparatus
D4.2 Test assemblies
D4.3 Test set-up
D4.4 Test procedure
D4.5 Evaluation of test results
D5 EXTENDED ASSEMBLY TEST
D6 TEST REPORT
APPENDIX E - SQUARE TAPER WASHERS
E1 SCOPE OF APPENDIX
E2 DIMENSIONS
E3 MATERIAL AND HEAT TREATMENT
E4 FINISH
Amendments
AS/NZS 1252.1:2016
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.