Vehicle & Technical > Discovery

Caliper bolts

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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 **** :evil: 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:

--- Quote from: Wolfie on February 08, 2008, 08:59:30 ---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.

--- End quote ---

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:

--- Quote from: Skibum346 on February 08, 2008, 10:53:43 ---
--- Quote from: Wolfie on February 08, 2008, 08:59:30 ---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.

--- End quote ---

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

--- End quote ---

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 :?

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