GB/T 5779.3-2000 Translated English of Chinese Standard (GB/T5779.3-2000, GBT 5779.3-2000): Fasteners. Surface discontinuities. Bolts, screws and studs for special requirementsThe limits, which are specified in this standard, apply to various types of surface defects of bolts, screws, studs with special requirements. |
Common terms and phrases
0.06d in width allowable limits Appearance Limit Forging batch of products bearing surface bolt or screw bolts and screws bursts may occur bursts Reasons Appearance circumference of bolts cracks are usually cracks may occur cracks Reasons Appearance dc or dk diagonal width dk maximum value exceed the allowable face of hex fasteners flange diameter flange face bolts Forging bursts Forging cracks forging or upsetting forging process Head diameter head of bolts Head or flange Hex flange bolts hex flange face hex-flange bolts idt ISO inspection by attributes International Electrotechnical Commission member bodies metal doublings Nominal thread diameter pitch diameter procedures and tables Reason Limits Limit Reasons Appearance Limit reduce the diagonal Round-head bolts round-head circumference screw thread screws and studs seam or lap seams and laps Shear bursts socket head screws specified minimum dimension surface defects technical committees thread Laps Thread nominal diameter top circle chamfer top surface upsetting process