Redundant P/N's for same vendor purchased item, revision to upper level

[alkaspeltzar]

Hi all,

We have several product lines over the years of acquisitions that have assemblies utilizing same vendor purchased item. Unfortunately, these product lines use the different part numbers for the same item. Could be as simple as a bolt or spring.

We would like to pick one part number, to supersede/obsolete the others moving forward, which will simplify it for our purchasing group.

However, being an ISO shop, some people think all upper level drawings containing the parts on the BOM must also be revised? What is the norm? In my past, we superseded parts but never revised the upper level. Our ERP system told you what the new/cross refernence part number was.

Curious as to others experience in the matter.

 

[3DDave]

Since your purchasing group is buying the same vendor part number anyway, why change anything? Part numbers are cheap. Being able to tell what the end item use is more difficult if you reduce it to one number. Your ERP system should be able to do this translation and track the requirement for XYZ vendor part number that is also given any number of other names.

My experience is that half the time someone thinks, like in this case, that consolidation of part numbers is great, then some product change happens so that one product line needs a separate number for a different part anyway.

 

[BiPolarMoment]

I don't know if you -have-to revise things but your impact analysis for making a change without revising the drawings better be very thorough.

My experience is that half the time someone thinks, like in this case, that consolidation of part numbers is great, then some product change happens so that one product line needs a separate number for a different part anyway.

Some lack of flexibility by having separate P/Ns can cause a huge headache -or- avoid an even bigger one when something like what you suggest happens.

 

[ctopher]

If the BOM indicates the revision of each part number, or has a p/n change, it would be updated to next rev.
If the assy dwg shows the part, and it gets updated form/fit/function, it would be updated, otherwise no. If the BOM on the dwg has a P/N change, rev would be updated.

ctopher, CSWP
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[drawoh]

alkaspeltzar,

Are you assigning new stock codes to purchased parts?

Replacing a stock code on a BOM is a revision. You can make a note on your change request to the effect that the new stock code specifies the same part, and that there is no change to form, fit and function.

If you are using any form of 3D[ ]CAD, you need to update the models to show the correct stock code, so that you can generate correct BOMs. All of these are revisions as far as I am concerned.

--
JHG

 

[alkaspeltzar]

Yes, purchasing is buying the same part. But when purchasing is trying to buy in qty, and has 3 different numbers to track, keep 3 locations filled, and tell the vendor "yes, i would like 3000pcs, but ordered under 3 different numbers for invenotry purposes" it creates confusion and indirectly adds cost.

Issue is when you have acquistions of many companies, there must be a way to simplify the builds. Cant tell me that internally John deere or CNH still have separate part numbers internally for a 3/8' bolt

Discussing with out ISO team, we are going to do a mass BOM/Upper Level revsions and ECN which will update the parts, supersede and obsolete the old part all in the ERP system. The prints will remain unchanged. IF the part is pulled up in the ERP system, it will direct the user to the current part, as both are still actually the same thing, just a different name/number

 

[drawoh]

alkaspeltzar,

Do your assembly drawings call up your BOMs by revision numbers?

--
JHG

 

[CWB1]

If your plant isn’t building to the print then you don’t have a quality standard to certify with ISO or otherwise. Personally I’d suggest promoting your process engineer into either an unpaid position working from home or fork and spoon operations, then notify legal (and document the notification) of the process quality screwup in case it affects regulated or safety critical products. I’d also start job shopping and make sure my name wasn’t on any release or quality documentation until the process is fixed.