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National Standards Of Fasteners

May 24, 2016

1, standard fastener size: specify basic dimensions of the product; a threaded products, also include the basic dimensions of the thread, thread closure, shoulder pitch, retracts slots and chamfers, externally threaded ends of parts with dimensions and other aspects.

2, fastener specification standards. Includes product tolerances, mechanical properties, surface defects, surface treatment, product testing standards and the corresponding content on specific provisions.

3 and screw acceptance inspection, marking and packaging of the product standard: specified product ex-factory acceptance sampling acceptable quality level and the sampling plan of the project, as well as product content and packaging requirements.

4, standard parts, fasteners, screws, screw the labeling standard: specified the full product marking method and the simplified method of its contents.

5, other aspects of fastener standard: fastener terminology standard, fastener products weight standards.

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