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AS/NZS 1252.1:2016
[Current]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.
Published: 23/12/2016
Pages: 46
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Referenced documents
1.4 Definitions
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
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
2.3.4.1 General
2.3.4.2 Tolerances
2.3.5 Thread length (b)
2.3.6 Squareness, concentricity and symmetry
2.3.6.1 Squareness of bearing face
2.3.6.2 Concentricity of shank to screw thread
2.3.6.3 Symmetry of head to shank
2.3.7 Chamfering and washer facing
2.3.8 Shank
2.3.8.1 Diameter
2.3.8.2 Straightness
2.3.9 Underhead fillet
2.3.10 Finish
2.3.10.1 General
2.3.10.2 Surface roughness
2.3.10.3 Surface finish and coating
2.4 Materials and mechanical properties
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
3.3.3.1 Squareness of thread to bearing face(s)
3.3.3.2 Symmetry of hexagon
3.3.4 Chamfering, washer facing and countersinking
3.3.4.1 Chamfering and washer facing
3.3.4.2 Countersinking
3.3.5 Finish
3.3.5.1 General
3.3.5.2 Surface roughness
3.3.5.3 Surface finish and coating
3.3.5.4 Lubrication
3.4 Material and mechanical properties
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
4.3.3.1 General
4.3.3.2 Surface roughness
4.3.3.3 Surface finish and coating
4.4 Material and mechanical properties
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
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
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
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
B3.2.1 Raw materials and components
B3.2.2 Manufacturing equipment
B3.2.3 Traceability and marking
B3.2.4 Nonconforming product
B3.2.5 Corrective action
B3.2.6 Surveillance auditing of the manufacturing process
B3.2.7 Modifications
B3.3 Production testing
B3.3.1 Product sampling and testing plan
B3.3.2 Testing equipment
B3.3.3 Recording and analysis of test results
B3.3.4 Review of the sampling and testing plan
B3.3.5 Corrective actions
B4 Nonconforming product
B4.1 General
B4.2 Retests
B5 Documentation
Appendix C
C1 General
C2 Information to be supplied by the purchaser
C3 Inspection
Appendix D
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
D4.5.1 Minimum tension in bolt
D4.5.2 Rotation values
D5 Extended assembly test
D6 Test report
Appendix E
E1 Scope of Appendix
E2 Dimensions
E3 Material and heat treatment
E4 Finish
Amendment control sheet
AS/NZS 1252.1:2016
Amendment No. 1 (2018)
Correction
Cited references in this standard
EN 14399-6
High-strength structural bolting assemblies for preloading (series), Part 6: Plain chamfered washers
EN 14399-5
High-strength structural bolting assemblies for preloading (series), Part 5: Plain washers
EN 14399-4
High-strength structural bolting assemblies for preloading (series), Part 4: System HV—Hexagon bolt and nut assemblies
EN 14399-3
High-strength structural bolting assemblies for preloading (series), Part 3: System HR—Hexagon bolt and nut assemblies
Content history
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