Caliper bolts

[JIM 2B]

Hi, anyone know where i can get some stainless steel caliper bolts front and rear (cap head/alan bolts!) for a 1995 300tdi

To replace them nasty horrid hard to get out pain in the **** original items...that have taken me two days to remove with heat etc.. I dont want to go there again.. [-X

Cheers ;)

 

[Wolfie]

I doubt very much that you will be able to find stainless bolts which have sufficient tensile strength. I've had a look around and commonly available A2 grade SS fixings have a tensile strength of 700 N/mm² which is less than the 800 N/mm² of 8.8 grade normal steel bolts (and I think that caliper bolts are made of a higher grade material anyway).

Just stick to the proper bolts.

[Skibum346]

I doubt very much that you will be able to find stainless bolts which have sufficient tensile strength. I've had a look around and commonly available A2 grade SS fixings have a tensile strength of 700 N/mm² which is less than the 800 N/mm² of 8.8 grade normal steel bolts (and I think that caliper bolts are made of a higher grade material anyway).

Just stick to the proper bolts.

To add to Wolfie's comments, when re-assembling, remember to put copper grease on the threads to prevent the same problem re-occuring in the future!

Skibum

[Wolfie]

I doubt very much that you will be able to find stainless bolts which have sufficient tensile strength. I've had a look around and commonly available A2 grade SS fixings have a tensile strength of 700 N/mm² which is less than the 800 N/mm² of 8.8 grade normal steel bolts (and I think that caliper bolts are made of a higher grade material anyway).

Just stick to the proper bolts.

To add to Wolfie's comments, when re-assembling, remember to put copper grease on the threads to prevent the same problem re-occuring in the future!

Skibum

Sorry, but I must disagree strongly.

I'm assuming that the Discovery bolts are similar to those on 110s which should be fitted with Thread Lock. In fact new 110 bolts come with threadlock pre applied.

[JIM 2B]

thanks for advice ;) are 110 bolts the same thread 12mm fine with a 12 sided head? the bolts that took so long to get out was because of the amount of thread lock! and the 12 sided head that you cannot get any grip on :?

[Wolfie]

Yes, 110 bolts are similar (possibly the same but don't quote me on that).

When the 12 point head isn't corroded to nothing it is actually better than a 6 point, with a well fitting socket. If yours are that bad I would suggest replacing them all, they aren't stupid money from a good independant specialist (can't remember how much).

[BK]

£4.23 each+vat,just bought some

[chris9119]

and the 12 sided head that you cannot get any grip on :?

Can if you clean them up first and then use the correctly sized, 12 sided socket.....  :idea: :idea:

[JIM 2B]

  :) umm have managed to clean them up and get them out using a good snapon socket on but still took a hell of a lot of heat and a big  breaker bar to get them out  ;)

I think far to tight for the job they are doing anyone know the torque setting ??

Im looking for a solution to prevent the problem happening again  ;) hence the idea of using stainless :)

Have found bolts at 0.55p here!!

http://www.famousfour.co.uk/new_parts/parts.php?veh=disco_300&sec=brks

[chris9119]

There the ones. Bet BK is kicking himself now :doh: :doh:

[BK]

B****KS.................saw me comin didnt they

[Range Rover Blues]

A good threadlock will protecxt the threads as well as copper grease and I have to agree that stainless is not suitable for the aplication.  In fact stainless fasteners are banned in motorsport becuase of the fatigue effects on chrome steels.