Suspension bolts
Suspension bolts
Author
Discussion

steve j

Original Poster:

3,223 posts

257 months

Saturday 20th April 2013
quotequote all
I`m in the process of doing a body lift and decided to clean up the suspension. I need to replace the bolts, I know they are 1/2 inch UNF, but, do they need to be a special grade of steel ? I`m thinking that they take a lot of stress and need to be specific for the job, thanks for any help.
stevej

zombeh

695 posts

216 months

Saturday 20th April 2013
quotequote all
S (normal high tensile stuff, about the same as 8.8 in metric)

Alan Whitaker

2,054 posts

211 months

Saturday 20th April 2013
quotequote all
Hi
8.8 a bit low try to go for 12.9 or min 10.9

Alan

Walford

2,259 posts

195 months

Saturday 20th April 2013
quotequote all
when i rebuilt my car i bought a bolt kit from a TVR parts suppler/ converter that no longer trading
they were not all the correct length and have gone rusty after 6 months of summer use
I do not wish to use stainless bolts, but would like to buy some unf bolts that are properly plated not Chinese cr@p

when i complained to him he said there all made in china now

mikel003003

1,084 posts

195 months

Saturday 20th April 2013
quotequote all
I also need a set, I belive Steve Heath is concentrating on other projects but I'm sure David Gerald or mlmotorsport could help

Edited by mikel003003 on Saturday 20th April 13:13

DeadSpider

416 posts

213 months

Saturday 20th April 2013
quotequote all

TurboTony

908 posts

200 months

Saturday 20th April 2013
quotequote all
S grade is fine for these. I used two suppliers:

Wrights in Coventry - they are local to me:

http://www.wrightsautosupplies.co.uk/

and:

Margnor - if you want 3 of something they can supply rather than buying a pack of x number. They also have the correct 10.9 M10x25 higher tensile fasteners for brake calipers:

http://www.margnor-online.co.uk/

I am a satisfied customer of both, but no relationship to them.