Central fuel tank bolt ?

[Stephen foster]

Hello ,
Wonder if Anyone might be able to inform Me the diameter and length of the centre fixing bolt for My 1955/56 swinging arm frame A10 please ?
Should this bolt also have a reduced head ?

I am struggling forcing the rubber bung deep enough to get the thread to start and am hoping to be able to find a slightly longer bolt ?

Thank You in advance ,
Steve..

[DAVE BRADY]

Hi,

You should be able to get the proper bolt.  Have a google, there plenty on ebay.

Dave.

[Stephen foster]

Thank You Dave ,
I have 2 already but had been trying to establish diameter and thread to source a longer than standard bolt to cut down .
Only needs to be 1/4" longer to catch the threads in the nut .

[DAVE BRADY]

Hi,

Do you have the correct nut?  It has a bit of a sleeve to go through the top washer which makes it about a 1/4" deeper than a standard nut.

Dave.

[Stephen foster]

Dave ,
Its a possibility that the nut has been replaced ?
Its a standard nut on My frame .

Ive just cut about 1/4" from the rubber bung and it now fastens ..

[DAVE BRADY]

Hi,

More than likely but as long as it now fits and is secure.

Dave.

[Dean Southall]

You are aware that their is a threaded sleeve insert in the top of the frame that the tank bolt screws into?
Part no 42-4078

https://draganfly.co.uk/product-category/bsa/sparesparts-for-bsa-a710-b3133-c101112-m202133/oil-petrol-tank-abcm/petrol-tank-mountings/

[DAVE BRADY]

Hi,

Sorry!  I was thinking A65.

Dave.