1. The integrity of the tag fastener

　　The form of a complete tag fasteners are as follows:


　　Tag that the content of the note:
　　1 - Fastener name; 2 - fasteners standard number; 3 - Fastener type;
　　4 - fastener specifications, accuracy; 5 - Fastener type and size of the other requirements;
　　6 - fastener performance or material grades and heat treatment; 7 - Surface Treatment
More than the first one to five methods of marking, by fasteners (product) standards;
　　6 marks the first method, by fasteners (basic) standards or material standards;
　　Article 7 of the labeling method, according to GB1238 "metal plating and chemical methods to deal with that" rule.
 
　　2. Fasteners to simplify the principles of mark

　　Marking Fasteners simplify the following principles can be simplified:
　　① fasteners in the name and age of the standard code to allow its omission;
　　② When the fastener product standards only provide for a type, accuracy, performance level or the material, heat treatment and surface treatment, allowing omitted;
　　③ When the product of two or more standard type, accuracy, performance level or materials, as well as the table in dealing with heat treatment may be omitted from the provisions of one of them.
 
　　3. Fastener marks Example

　　① thread specifications d = M12, the nominal length L = 80mm, the performance level to be 8.8, galvanized purified, A-level hexagonal head bolt for the integrity of the tag:
　　　　Bolt GB5782-86 M12 × 80-8.8-zn D
　　② thread specifications d = M12 × 1.5, the nominal length L = 80mm, the performance level to be 8.8 for the surface oxidation, A class of hexagonal head bolt for the integrity of the tag:
　　　　GB578 M12 × 1.5 × 80
　　Omitted from the above-mentioned tag "Name", "standard during the short in front and its designated," "performance level" and "surface treatment" other items of content.
　　③ Nominal diameter d = 8mm, length L = 30mm, the material for the 35 steel, heat treatment, hardness HRC28-38, the surface oxidation of the A-type cylindrical pin marking simplified as follows:
　　　　Pin GB119 8 × 30
　　Omitted from the above-mentioned marking the "standards before the latter‘s and its short-zoned", "type", "material", "Heat Treatment" and "surface treatment" other items of content.
　　④ Ibid specifications, materials, heat treatment and surface treatment of B-type cylindrical pin marking simplified as follows:
　　　　Pin GB119 B8 × 30
　　Product standards in accordance with the provisions, with the exception of A-type, the 　　　　other "types" of content that can not be omitted in the tag.