3, screw product acceptance inspection, marking and packaging criteria: project eligibility checks specified when the factory acceptance quality levels and sampling program, as well as the content method and packaging requirements of the product logo. Stainless steel nylon lock nuts, Qingdao stainless steel micro screws, stainless steel lock nut, stainless steel welded nut 4, standard parts, fasteners, Weifang stainless steel marking method standard miniature screws, screws, screws: complete labeling methods specified products and simplifying content labeling method aspects. 5, fastener standards in other areas: terminology such as standard fasteners, miniature stainless steel screws, fasteners product weight standards. Ex: 1/8 x 0.50 -PPB: 1 minute Screw x 0.50 "long, Dongying stainless steel micro screw, PPBEx: 5/16 x 0.50 -PPB = 2.5 / 8 x 0.50-PPB: 2 and a half Screw x 0.50" Long, PPBEx: 5/32 x 0.50 -PPB = 1.25 / 8 x 0.50-PPB: 1 minute 2% half screw x 0.50 "long, PPBEx: 1/4 x 0.50-PPB = 2/8 x 0.50-PPB: 2 min Screw x 0.50 "long, PPB Note: sometimes labeled coarse or fine tooth stainless steel screws, stainless steel plug, stainless steel bolts, screws 316. 316 flat pad UNF: fine teeth: the electronics industry is more commonly used stainless steel cotter pin, stainless steel Gasket UNC:. Coarse teeth: heavy mechanical structures more commonly .Ex: 3/8 x 0.50, UNF -PPB: 3 minutes fine screw x 0.50 "long, PPB.C-2: Length Code: Jinan Road ground (FIG), Zibo stainless steel micro screws, stainless steel screws provide micro Daoqin Jinan Trading Company (www.daoqinshangmao.com from Jinan Daoqin Trading Company. ) (www.daoqinshangmao.com) strong, credible, in Jinan, Shandong hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and continuously improve innovative ideas will lead Jinan Road ground and you work into brilliant, for a better future!