Dimensional tolerance MIN question 6

• May 5, 2014

1
• #2

CheckerHater

Mechanical

Sep 22, 2009

2,889

No, that means hole can be anywhere from 0.675 to the infinity.

 

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• May 5, 2014

3
• #3

pmarc

Mechanical

Sep 2, 2008

3,227

No, that means the tolerance for size of the hole is infinity, because no upper limit for that dimension was has been given.

The MIN specification falls exactly under "UNLESS OTHERWISE SPECIFIED", so it overrides any tolerance specified in the general note.

 

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• May 5, 2014

1
• #4

ewh

Aerospace

Mar 28, 2003

6,147

No, it means the hole can be no smaller than Ø.675, which, to my understanding, means that it can be as large as is convenient (large enough to engulf the whole part). A real time saver!
;-)

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

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• May 5, 2014

• Thread starter
• #5

roywu2002

Mechanical

Nov 29, 2012

4

Ah that makes sense. Thanks a lot guys!

 

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• May 5, 2014

1
• #6

powerhound

Mechanical

Jun 15, 2005

1,300

I agree with everyone. MIN means there is no maximum and MAX means there is no minimum. Also, as pmarc has already pointed out, specifying MIN means that it is "otherwise specified", so the general tolerance does not apply.

John Acosta, GDTP S-0731
Engineering Technician
Inventor 2013
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SSG, U.S. Army
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• May 5, 2014

• #7

3DDave

Aerospace

May 23, 2013

11,264

If you can, ship an empty box with an inspection report showing the part failed all except the hole size, which is marked - "DIA 2,000,000 inch PASS (NOTE, LIMIT OF MEASURING EQUIPMENT, MAY BE MUCH LARGER.)"

Use a very small box. Mark it Free Sample.

 

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• May 5, 2014

• #8

KENAT

Mechanical

Jun 12, 2006

18,387

If relevant section 2.5 of ASME Y14.5M-1994 sets the ground rules for 'Single Limits'.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

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• May 5, 2014

• #9

ewh

Aerospace

Mar 28, 2003

6,147

It seems that on any hole dimension "MIN" could easily violate the standard by resulting "in a condition
detrimental to the design". In the "real world", I don't think it is problem because that inspection report mentioned by 3DDave does carry some weight.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

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