1 Subject Contents and Application Scope
This standard specifies the labeling system, indexes, test items, test methods and marks for the mechanical properties of fasteners made of non-ferrous metals.
This standard is applicable to the commodity fasteners such as bolts, screws, studs and nuts made of copper and copper alloys or aluminum and aluminum alloys, of which, the coarse thread diameter is 1.6~39mm and thread dimension and tolerance are in accordance with those specified in GB 196 and GB 197.
This standard is not applicable to set screws and similar threaded fasteners without definite tensile strength or nut proof load.
The property requirements of corrosion resistance and electrical conductivity are not specified in this standard.
2 Normative References
GB 196 General Purpose Metric Screw Threads - Basic Dimensions
GB 197 General Purpose Screw Threads - Tolerances and Fits
GB 3098.1 Mechanical Properties of Fasteners - Bolts, Screws and Studs
GB 3098.2 Mechanical Properties of Fasteners - Nuts
GB 3098.6 Mechanical Properties of Fasteners - Stainless Steel Bolts, Screws, Studs and Nuts
GB 3190 Chemical Composition of Wrought Aluminum and Aluminum Alloys Designation
GB 5231 Designation and Chemical Composition of Wrought Copper and Copper Alloys
GB 5232 Wrought Copper - Zinc Alloys (Brasses) - Chemical Composition and Forms of Wrought Products
GB 5233 Wrought Bronzes - Chemical Composition and Forms of Wrought Products
3 Labeling System
See Table 1 for the labeling codes for property classes of bolt, screw, stud and nut made of non-ferrous metal.
1 Subject Contents and Application Scope
2 Normative References
3 Labeling System
4 Materials
5 Mechanical Properties
6 Test Items for Mechanical Properties
7 Test Methods
8 Marks for Property Class
Annex A (Informative) Applicable Material Designations in International Standard
Additional Explanation
