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 requirements
https://www.chinesestandard.net, Aug 21, 2022 - Technology & Engineering - 19 pages
The limits, which are specified in this standard, apply to various types of surface defects of bolts, screws, studs with special requirements.
Acceptance inspection according agreement allowable limits apply approval batch of products bearing surface bolt or screw bolts and screws bursts Reasons Appearance caused Chapter clause cracks are usually cracks may occur damage dc or dk depth exceed exceed the allowable extend fasteners flange bolts flange diameter flange face Folds Forging bursts Forging cracks forging process forming GB/T grain boundary Head diameter head of bolts Head or flange hex-flange bolts Hex-head hexagon inspection inspection by attributes International Standards length located machining manufacture meet member bodies metal doublings Nominal thread diameter Note permissible permitted pitch diameter portion procedures product standard provisions Quench cracks raw material Reason Limits Limit Reasons Appearance Limit reference rejected revision rolled round Round-head Sampling screws and studs seam or lap seams and laps shank Shear bursts special requirements specified stress surface defects technical committees Tool marks top surface types unless Voids width