Use of "STK" for stock size callouts
Use of "STK" for stock size callouts
(OP)
Does anyone know if Y14.5 gives a definition for the "STK" notation?
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Use of "STK" for stock size callouts
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RE: Use of "STK" for stock size callouts
However, it's also an abbreviation for Stack & Strake apparantly so make sure it's clear in your context, I'm guessing on a drawing this shouldn't be an issue.
I've used it on drawings.
RE: Use of "STK" for stock size callouts
Along with correctness of use, I'm trying to answer the question of how to properly interpret the callout. Unfortunately, I do not have access to Y14.5. The reference I have available is McGraw Hill's "Dimensioning and Tolerancing Handbook." This discusses usage of stock callouts as part of an exception to Y14.5's Rule #1. The handbook I am working with states, "Y14.5 exempts the following from Rule #1...Stock, such as bars, sheets, tubing, structural shapes, and other items prodeced to established industry or government standards that prescribe limets for straightness, flatness, and other geometric characteristics..."
To me, the above is a pretty good implied definition from the specification. I am wondering if the definition is spelt out explicitly as well.
RE: Use of "STK" for stock size callouts
I think this may be part of the answer you are looking for:
If you call out STK meaning Stock size of a particular extrusion, you are not necessarily implying that you accepting all the manufacturing charactaristics regarding warpage, flatness, etc.
Your stock size is just a nominal dimenstion that you can do whatever you want with - but it implies certain material properties that you will use when you move into the analysis phase of your design.
Wes C.
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RE: Use of "STK" for stock size callouts
You can specify the material size in a note and provide a vendor. I would then make any material size dimensions reference.
You need to provide either a tolerance on the print, a tolerance in an included document, or a vendor name and part number that you can use to determine what the tolerance should be.
David
RE: Use of "STK" for stock size callouts
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RE: Use of "STK" for stock size callouts
RE: Use of "STK" for stock size callouts
RE: Use of "STK" for stock size callouts
RE: Use of "STK" for stock size callouts
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RE: Use of "STK" for stock size callouts
David
RE: Use of "STK" for stock size callouts
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