BS 7670-2:1997

Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 Steel
5 Information and requirements to be agreed and to be
    documented
6 Surface conditions
7 Edge conditions and form of component
8 Shape and dimensions
9 Materials for electrode assembly
10 Design of electrode assembly
11 Weld assessment
12 Routine inspection of welded components
13 Reclamation
Annexes
A (informative) Recommendations for appropriate welding
    equipment
B (informative) Typical welding conditions
C (informative) Welding procedure information
Tables
1 Weld nut size relative to sheet thickness
2 Typical torque values for weld nuts
B.1 Typical welding condition for square weld nuts
B.2 Typical weld conditions for weld bolts
Figures
1 Positioning of square and hexagonal nuts prior to
    welding
2 Location of weld bolt
List of references

Defines projection welding of weld nuts and weld bolts singly to uncoated and coated steel sheet of thickness between 0.5 mm and 5.0 mm.

This British Standard specifies projection welding of weld nuts and weld bolts singly to uncoated and coated steel sheet from 0.5 mm to 5.0 mm thick. Annex A gives recommendations for appropriate welding equipment and annex B outlines typical welding conditions.

NOTE 1. It is emphasized that this type of weld is loaded in compression only. The purpose of the weld is to prevent the fastener from rotating during assembly or disassembly of a fabrication. It is not intended as a structural weld.

This standard specifies weld nuts and weld bolts, the design, dimensions and materials of which are detailed in Part 1 of this standard. Annular projections are not included. In addition to the definitive requirements specified throughout the standard, the documented items detailed in clause 5 shall be satisfied before a claim of compliance with the standard can be made and verified.