Weldable nut/ferrule

[JStructsteel]

What would you recommend for a weldable nut that can be used as part of a weldment assembly?

I was thinking a ferrule nut from Dayton Superior, but might be too frail for the weld.

Any suggestions?

Is there just a ASTM for nuts that can be welded?

 

[bridgebuster]

On a recent project, I called for A563 Grade C Class C3 nuts. It was the best choice because they were low carbon and they may not be heat treated. In my case, the nuts are welded to the top flange of a steel box in order to attach an access cover plate. The box beam is intended to stop over height trucks from hitting a bridge. Due to several installation constraints I needed a large opening; the access plate and its connection will take impact loads.

 

[JStructsteel]

The more I look at my piece, the nuts are between two plates, just not alot of room to manuver a nut into the area. Its more just a weld to hold them in place and allow the bolt to be tightened inside. More when I get my sketches done.

 

[BAretired]

You could weld a plate formed like a wrench to prevent the nut from rotating.


BA

 

[BrianPetersen]

Weld-nuts are commonplace in automotive bodyshell manufacturing. If the nuts are between two plates, weld the nut in place on one of them before the completed assembly gets welded together ... just remember to protect the threads from weld spatter if needed (e.g. by covering the opening or by temporarily threading a screw into the nut).

 

[samdamon]

Dayton Superior makes a hex shaped coupler, that is of weldable steel, that you might consider