Listers,
Rich is correct. Anyone with a 100 (BN1/2) should be familiar with this
since all of the Whitworth fasteners (primarily BSF) listed in the parts
book are also denoted in this manner, i.e., as a BMC part no. Therefore,
there is no way to determine the size/length/type of the fastener from the
part no. in the Factory Parts Book.
One project I hope to complete, is to decode all of the part numbered
fasteners for the 100s. I didn't do it on dis-assembly of my 100 so it will
have to wait to the assembly begins in earnest.
Cheers,
Curt
On Thu, Sep 16, 2010 at 12:14 PM, Rich C <richchrysler@quickclic.net> wrote:
> Jim is referring to the standard BMC letter and number codes for standard
> fasteners. However, in the case of the crown wheel bolts (and for that
> matter, many other specialty bolts throughout the car) are specific part
> numbers and have nothing to do with the standard fastener codes. Therefore
> ATA 7232 is a specific part number for that specific bolt.
>
> Rich Chrysler
>
> --------------------------------------------------
> From: "rjhco" <rjh.co@tx.rr.com>
> Sent: Thursday, September 16, 2010 11:51 AM
>
> To: <healeys@autox.team.net>
> Subject: [Healeys] Official Parts List Question
>
> The attachment bolts for the crown wheel (ring gear) are listed in the
>> Official Parts List as: ATA 7232
>>
>> According to the fastener reference, the first two numbers are the
>> diameter
>> in 1/16ths and the second two numbers are the length in 1/8ths. Clearly,
>> the system does not work for the above number. Also, ATA is not listed in
>> the fastener references.
>>
>> Can someone please explain the above numbering system?
>>
>> From memory, I believe that the bolts are grade 8; 3/8 x 24; one inch in
>>>
>> length. I don't have access to the bolts at the moment or I would measure
>> them!
>>
>> Best regards,
>> Jim
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