Foreword
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 and studs
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 and M10
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 bolts and 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