Standard No.:	GB/T 13680-1992
Chinese Name:	焊接方螺母
English Name:	Square weld nuts
Professional Classification:	J13 Fastener
Professional Classification:	GB National Standard
ICS Classification:	21.060.20 Nuts
Issued by:
Issued on:	1992-09-22
Implemented on:	1993-06-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	90 (USD)
Delivery:	via email in 1-3 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