AS/NZS 1214:2016
Hot-dip galvanized coatings on threaded fasteners (ISO metric coarse thread series)
Specifies material, process, dimensional and some performance requirements for hot dip spun galvanized coatings applied to coarse threaded steel fasteners from M8 up to and including M64 and for property classes up to and including 10.9 for bolts, screws and studs and 12 for nuts. It is not recommended to hot dip galvanize threaded fasteners in diameters smaller than M8 and/or with pitches below 1,25 mm. Note that the proof loads and stresses under proof load of oversize tapped nuts with threads M8 and M10 and the ultimate tensile loads and proof loads of undersize threaded bolts and screws with threads M8 and M10 are reduced as compared to the values specified in ISO 898-2 and ISO 898-1 respectively and are specified in Annex A. It primarily concerns the spun hot dip galvanizing of threaded steel fasteners, but it may also be applied to other threaded steel parts. The specifications given in this standard may also be applied to non-threaded steel parts such as washers. Adopted with national modifications from ISO 10684:2004.
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CONTENTS
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 Raw material of parts
4.2 Zinc
5 Hot dip galvanizing procedures and precautions
5.1 Stress relief
5.2 Cleaning and pickling
5.3 Baking
5.4 Fluxing
5.5 Hot dip galvanizing
5.6 Spinning and quenching
5.7 Special requirements for nuts
5.8 Post-treatment
6 Requirements on thread tolerances and additional marking
6.1 General
6.2 Requirements and precautions in assembling hot dip galvanized threaded fasteners
6.3 Special requirements for marking when supplying fasteners in sealed containers
7 Mechanical properties of nuts tapped oversize and undersize threaded bolts, screws andstuds
8 Coating requirements
8.1 Appearance of zinc coating
8.2 Considerations for hot dip galvanized washers
8.3 Zinc coating thickness
8.4 Adhesion of zinc coating
9 Lubrication
10 Ordering requirements
11 Designation
Annex A (normative) Special requirements for bolts, screws and nuts with thread sizes M8 andM10
Annex B (normative) Limits of sizes for hot dip galvanized internal and external screw thread M8
Annex C (informative) Calculation of minimum ultimate tensile loads and proof loads for boltsand screws M8 and M10 with threads undersized to tolerance class 6az
Annex D (informative) Surface areas of bolts, screws and nuts
Annex E (normative) Adherence of hot-dip galvanized coating
Annex F (informative) Strength of hot dip galvanized bolt or screw and nut assemblies
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CONTENTS
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 Raw material of parts
4.2 Zinc
5 Hot dip galvanizing procedures and precautions
5.1 Stress relief
5.2 Cleaning and pickling
5.3 Baking
5.4 Fluxing
5.5 Hot dip galvanizing
5.6 Spinning and quenching
5.7 Special requirements for nuts
5.8 Post-treatment
6 Requirements on thread tolerances and additional marking
6.1 General
6.2 Requirements and precautions in assembling hot dip galvanized threaded fasteners
6.3 Special requirements for marking when supplying fasteners in sealed containers
7 Mechanical properties of nuts tapped oversize and undersize threaded bolts, screws andstuds
8 Coating requirements
8.1 Appearance of zinc coating
8.2 Considerations for hot dip galvanized washers
8.3 Zinc coating thickness
8.4 Adhesion of zinc coating
9 Lubrication
10 Ordering requirements
11 Designation
Annex A (normative) Special requirements for bolts, screws and nuts with thread sizes M8 andM10
Annex B (normative) Limits of sizes for hot dip galvanized internal and external screw thread M8
Annex C (informative) Calculation of minimum ultimate tensile loads and proof loads for boltsand screws M8 and M10 with threads undersized to tolerance class 6az
Annex D (informative) Surface areas of bolts, screws and nuts
Annex E (normative) Adherence of hot-dip galvanized coating
Annex F (informative) Strength of hot dip galvanized bolt or screw and nut assemblies
AS/NZS 1214:2016
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.