standard fastener description

[artnmotion]

Just curious as to what practices you abide to when renaming CAD Models Property Descriptions such as "Fasteners" from McMaster-Carr?

Example:

92196A031 (McMaster-Carr P/N)

(McMaster-Carr Description)
18-8 Stainless Steel Socket Head Screw
4-40 Thread Size, 1" Long, Fully Threaded

We would typically change the Property Description to: SHCS .112-40 X 1.0 LG
I'm basically trying to truncate the Description.

Thanks.

-Art

 

[MintJulep]

You truncated the material information to nothing.

 

[artnmotion]

it was just an example. That is why I am asking.

 

[MintJulep]

When in doubt, "complete and unambiguous" is never wrong.

 

[Rogue909]

If you're looking to give purchasing a high level that they can quickly select from an ERP system then enter the mcmaster P/N then that would be fine. I'd recommend standardizing the number of significant digits though. Maybe 'SHCS 00.112-40x01.000 18-8'. Effectively 'Geometry Description Material'.

If you're looking to describe something on a BOM and not link back to a specific P/N then that's insufficient to guarantee the right bar. You'd have to default to the ASME requirements for dimensioning and astm for grade. Would look something like...
Hexagon Socket Head Cap Screw, ASME B18.3, 1-8 UNR-2A (21) X 01.000, F593 Alloy Group 1
Where the ASME B18.3 would give the dimensional tolerances and the thread callout (1-8 UNR-2A (21)) would define the thread per ASME B18.1. Then length and grade per F593.

 

[drawoh]

artnmotion,

Imagine that I am working for you as a clerk, and I am on the phone telling a vendor that we need an SHCS .112-40 X 1.0 LG. Will the clerk working for your vendor understand this? This description is adequate if it accompanied by the McMaster Carr part number, but what if you don't want to order from McMaster Carr?

CAP SCR HX SCKT ST STL 4-40x1 ???

All sorts of people out there carry stainless steel cap screws. Let your purchasing pick the cheapest, most cooperative vendor.

Your CAD model must contain metadata that can be entered into a BOM, with enough information to completely and unambiguously describe the part. If it were my CAD model, the filename would be a drawing number pointing to a specification control that describes all the requirements of the part. If your requirements are really nasty and complicated, you can order by your drawing number, and send the specification control out to your vendor.

You don't say what CAD you are using. In SolidWorks, you can make the DESCRIPTION metadata visible in the assembly tree. Random looking filenames are not a problem.

--
JHG

 

[CWB1]

For model naming, I have always had to follow a short company standard similar to the OP's example. Attributes otherwise that get pushed to PLM from CAD are similarly company specific, sometimes everything is crammed into one (lousy practice) and others break them down. At one mega-corp that had every fastener custom made to their spec, each bit of data was its own unique attribute. PLM then fed multiple other systems including a very nice standard part search engine which accepted items like head type, thread, thread length, grade, measurement system, etc as separate searchable user inputs just like McMaster's website.