中文版
The first chapter measure
(1) fastener's complete mark
Fastener's complete mark form is as follows:
In mark each expression contents note:
1- fastener names; 2- fastener standard serial numbers; 3- fastener patterns;
4- fastener specifications, precision; 5- fastener patterns and size other requests;
6- fastener performance rating or material and heat treatment; 7- surface treatments
The above 1st item to 5th mark method, according to fastener (product) standard stipulation;
6th mark method, according to fastener (foundation) standard or material standard stipulation;
7th mark method, according to GB1238 "Metal clad And Chemical treatment Expression Method" stipulation.
(2) fastener's mark simplification principle
Fastener's mark may carry on the simplification according to the following simplified principle:
①In fastener name and standard serial number age number permission abbreviation;
②In the important firmware product standard only stipulated when one pattern, precision, performance rating or material, heat treatment as well as surface treatment, the permission abbreviates;
③When product standing operating procedure two above patterns, precision, performance rating or material, heat treatment as well as table when processing, may stipulate abbreviation one kind.
(3) fastener's mark demonstration
①Thread specification d=M12, nominal length L=80mm, the performance treat the level are 8.8 levels, the galvanization purification, a level hexagonal head tap bolt's complete mark are:
Bolt GB5782-86M12×80-8.8-zn · D
②The thread specification d=M12×1.5, nominal length L=80mm, the performance treat the level are 8.8 levels, the superficial oxidations, a level hexagonal head tap bolt's complete mark are:
GB578M12×1.5×80
In the above mark has abbreviated “the name”, “the standard age number and front delimits, “the performance rating” short” and “the surface treatment” and so on a content.
③Nominal diameter d=8mm, length L=30mm, the material are 35 steel, the heat treatment, degree of hardness HRC28-38, the surface oxidized A cylindrical pin's simplified mark are:
Sells GB1198×30
The above mark has abbreviated “the standard age number and first then short delimits”, “the pattern”, “the material”, “the heat treatment” and “the surface treatment” and so on a content.
④With on specification, the material, the heat treatment and surface treatment's B cylindrical pin's simplified mark is:
Sells GB119B8×30
According to product standard stipulation, except A place, other “pattern” the content cannot abbreviate in the mark.
