1970 rear suspension bolts.

[Matt G]

Looking for two rear suspension bolts. 1/2" x 9" grade 7 (correct) or grade 8. Research indicates that you can only buy them in packs of 10 or 20. I figured that I can't be the first to make the purchase, so if anyone has two spare, I love to swap some cash (or beers) for them.
I mounted up some from Bunnings (height and stance is great) then saw the original hex markings and realised that the Bunnings bolts have half of the yield strength, so despite the probable 4:1 safety factor, I figured it best that I change them...
Look forward to any help/suggestions.

[rosco]

Lee Brothers at Nth Parramatta
Rosco

[Vettech]

Many moons ago I replaced my 78's, I got them from Ian at Chev Parts, Yennora. I'm pretty sure they should he High Tensile Grade 8.

[Matt G]

Thanks Guys, I saw that Lee Bros are a distributor of a manufacturing mob in Moorebank.  I've purchased from them many, many, many years ago (when I was a proper engineer), but I thought that they had 3/4 closed...  I'll check them out.  Are they reasonably priced for individual bolts?  A pack of 20 from Blackwoods is about $80...  I would have purchased them, but I wasn't sure what I'd do with 18 spare 9" bolts 😜.

[Vettech]

Sounds like a raffle prize donation, packs of two, dont forget the nuts and washers..........

[rosco]

Lee bros. are still going strong and you can buy in pairs or what ever they have just about every bolt made.
Rosco

[Matt G]

Thanks guys, I'll see how I get on with Lee Bros. I switched back to my std bolts tonight... looks like a FWD again 😢.

[stingray]

call Bolt Masters at Penrith

[bfit]

Industrial Fasteners  9534 6844  talk to Peter
only use grade 8  UNF and get hardened crimp nuts.
I don't like nylox  nuts, as the majority are not hardened , no point having  quality bolts when the nut can let you down.

Its not a bad idea to drill across the end of the thread below the nut and fit a roll pin or split pin to make sure the nut cannot screw off.
If you’re not sure what I mean here PM me


BFit

[Matt G]

Hi guys. Got them from Lee Bros yesterday. $27 for 2pcs of 1/2"x9" grade 8 bolts with 4 matching nuts. I reckon that's pretty good. Lee Bros was exactly how I remember. A serious blast from the past. They mentioned that they will click up 108 years of operation in 2018.  Awesome to be able to support these types of long term Aussie companies 😁👍

[Matt G]

Bfit, I'll use two nuts per bolt to lock it up tight. I might use some medium strength threadlocker also, however I think that might be overkill...
Thanks all for the suggestions.