Curt -
I've done an extensive partial decode on the BSF fasteners from my
A90. Since all the fasteners on that car are BSF & BA, my code list
is quite good at this time.
Many engine and drivetrain bolts, however, use oddball codes because
of bolt ratings (there are several levels in British boltdom) and odd
lengths or special heads. It can get very complicated so my bolt list
focuses on standard grade bolts used on the chassis.
I'll send that list to John Sims, it would be great if you can
augment it when you do your disassembly.
Cheers,
Alan
On 9/17/10, Curt/Nancy Arndt <cnaarndt@gmail.com> wrote:
> 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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