Good idea in principle, but think of the cost, paper wise and magnetic
media wise, of storing all those digits. Then think of the possibility of
error when you have long, complex part numbers.
Keep it simple
N
At 14:27 07/10/97 -0400, you wrote:
>Hi Ray,
>
>ISO doesn't tell anyone what specifically to do.
>It only states that it *shall* be done.
>
>4.8 Product Identification and Traceability -
>
> "shall establish and maintain documented
> procedures for identifying the product by
> suitable means from receipt and during all
> stages of production, delivery,
> and installation."
>
>As you can see, it doesn't tell you anything.
>
>I did work in a company that after 10 years was
>in the midst of coming up with a new numbering
>system because the old ones were running out.
>
>Here's what their problem was:
>
>All part numbers were
>1st character was a "P" for page,
>the next 5 characters were numbers 0 thru 9,
>and the final character was letters A thru E, for
>different paper sizes, and O for obsolete.
>Example: P12345B was on a B size paper.
>
>If a BOM was applied to this drawing, the BOM
>had the same number. Whenever the drawing or
>BOM got REVed, both got REVed. So a spelling
>error being corrected on the BOM would cause
>a bump in the drawing REV also.
>Terrible system.
>
>That left 1*10*10*10*10*10*6 possibilities,
>or 600,000 separate part numbers. It took only
>10 years to gobble them up.
>
>They shifted over to something based on the EEM
>numbering system where categories of parts are
>given a 4 digit prefix, followed by a 6 digit
>number, then finally a 3 digit number for a
>total of 10^13 possible separate part numbers.
>They had started talking about putting a letter
>on the end to signify the REV level at about the
>time that I left. Example: 1234-123456-123A
>
>I have seen at least one company that did a
>variation of this theme and added an additional
>4 digit field as a date code for year and week.
>Example: 9741-1234-123456-123A
>Adding any letter of the alphabet onto the last
>digit would bump you up to 2.6*10^14 possible
>numbers.
>
>Still another company I've seen put in a code
>in the part number that meant something within
>the company.
>
>I didn't have the secret decoder ring for that one. ;)
>
>Regards, Doug
>
>
>----------
>> From: [log in to unmask]
>> To: [log in to unmask]
>> Subject: [TECHNET] Part Numbering Systems
>> Date: Tuesday, October 07, 1997 1:30 PM
>>
>> Hello,
>> I'm starting an engineering support department in a new company
>and
>> I'm looking for some suggestions on creating a part numbering
>system.
>> It's a new telecommunications company which will eventually be ISO
>and
>> BSA certified.
>> I'll need part numbers for components, hardware, and drawing
>numbers.
>> -Are there any standards that I should reference?
>> -Any workmanship specifications that I could use as a guideline?
>> -Some idea's on the amount of characters and category listings to
>use?
>>
>> Thanks,
>>
>> Raymond Smith Jr.
>> Sr.PC Board Designer
>> (short time address)
>> ADC Broadband Communications
>> 999 Research Pky.
>> Meriden, Ct. 06450
>>
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>
Nicholas Kane
Axion Australasia
Suite 3, 651 Canterbury Road
Surrey Hills
Victoria 3127
Australia
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