undertray arch thread anchorage missing

[CrispyEdd]

Looks like the thread that hangs down From the chassis legs, which the nut clamps the undertray to, is sheared flush in one side.

Okay to drill it out and place a stainless rivnut into the leg?

 

[MickAli]

Seems reasonable. I have the same issue on one side as some previous monkey has ripped it out leaving a jagged hole.
Haven't figured a fix yet

 

[jorrituk]

Just checked the risk of galvanic corrosio. it seems ok to use some people go belt and braves by using an isolating paste as Duralac.

Duralac Anti Corrosive Jointing Compound 115ml

MB Fibreglass of Northern Ireland (Mcconnell Bro's)- Supplying throughout the UK & Ireland

www.mbfg.co.uk

Bimetallic (galvanic) corrosion risks from contact with galvanised steel or aluminium – British Stainless Steel Association

bssa.org.uk

good luck