One of the fail points at SVA was because I used imperial bolts (to go into imperial seatbelt mounts!)...
The tester was not familiar with the markings on imperial bolts and was not happy that they didnt say 8.8...
Rather worrying..
So, does anyone have a simple picture guide explaining what the little symbols mean on imperial bolts....
Basically I need to prove that my bolts are rated equal or better to 8.8!
is this any good http://www.boltdepot.com/fastener-information/Materials-and-Grades/Bolt-Grade-Chart.aspx
Some info on here http://dave-s.com/Portfolio/ref/BoltGrade.htm
http://performanceunlimited.com/documents/boltguide.html
Mike
[Edited on 24/7/08 by miikae]
Thats pretty good...but does not give a direct comparison between metric anc imperial which he will need...
I could do the calculations to show that the relative strengths are the same....but I cant be bothered to explain that all to him unless I have to!
should have something at work will have a look tomorrow.
http://www.warburtons.com.au/resources/Tech_Pages01.pdf
any use?
not sure what system there is for imperial bolts!!
quote:
Originally posted by tegwin
The tester was not familiar with the markings on imperial bolts and was not happy that they didnt say 8.8...
http://www.namrick.co.uk/boltspec.asp
will this do - if you scroll to the bottom it shows that grade 'S' has the same tensile strength as 8.8
Sounds like the tester is a bit of dickhead to be honest...AFAIK seat belt mounts are and have always been 7/16 UNF therefore would always have
imperial markings....
And even if I'm wrong about the 7/16 bit he still should be familiar with imperial markings.
quote:
Sounds like the tester is a bit of dickhead to be honest
mine are imperial marked and my tester didn't even bat an eyelid, if fact he didn't comment at all about any bolts apart from my gearbox
mount that i forgot to do up!