Standard No.:	GB/T 13680-1992
English Name:	weld nuts
Chinese Name:	焊接方螺母
Chinese Classification:	J13    Fastener
Professional Classification:	GB    National Standard
ICS Classification:	21.060.20 21.060.20    Nuts 21.060.20
Issued by:	AQSIQ
Issued on:	1992-9-22
Implemented on:	1993-6-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	2500 words
Price(USD):	75.0
Delivery:	via email in 1 business day

1 Subject content and applicable scope This standard specifies the type, dimension and technical conditions of square weld nuts with thread specifications of M4~M16. This standard is applicable to weld nuts for connection of weldable steel plate. 2 Normative references GB 90 Acceptance inspection, marking and packaging of fasteners GB 196 General purpose screw threads - Basic dimensions for diameter from 1 to 600 mm GB 197 General purpose screw threads - Tolerances and fits for diameter from 1 to 355 mm GB 1237 Designation system for fasteners GB 3098.2 Mechanical properties of fasteners - Nuts GB 3103.1 Tolerances for fasteners - Bolts, screws and nuts GB 5267 Electroplated coatings on threaded fasteners GB 5779.2 Fasteners - Surface discontinuities - Nuts - General requirements GB 12212 Technical drawings - Dimensions, proportions and simplified representation for welding symbols

1 Subject content and applicable scope 2 Normative references 3 Type and dimension 4 Technical conditions 5 Expression method of weld nuts 6 Steel plate for welding 7 Mark Annex A Weight of square weld nuts (Reference attachment)