SANS 1700-2-19 Ed. 1 (2003)被替代
Fasteners - Part 2: Screw Threads - Section 19: Iso General Purpose Metric Screw Threads - Tolerances - Limits Of Sizes For Hot-dip Galvanized External Screw Threads To Mate With Internal Screw Threads Tapped With Tolerance Position H Or G After Galvanizing
出版：South African Bureau of Standards
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