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5&3/16" -16UN thread

5&3/16" -16UN thread

5&3/16" -16UN thread

(OP)
Anyone can help out? looking got the major, Pitch and minor for an external & internal thread tolerance. Machine handbook only covers  5 1/8 and 5 1/4. this 5 3/16"is an old odd ball thread.  

RE: 5&3/16" -16UN thread

Interpolate.

Don
Kansas City

RE: 5&3/16" -16UN thread

This is freeware that will get you the information you are looking for:

http://www.boltplanet.com/Un/un.asp?txtseries_page=UNS

A much better long term solution would be to buy a thread calculator that will give a more comprehensive output (inspection data, coating thickness, etc.) like this one:

http://www.johnsongage.com/ip_threadspecs2_0.aspx

Of coarse, if you are going to rely on free software it would be a really good idea to be able to make the calculations yourself so that you can double check now and then.

 

Harold
SW2009 SP2.0 OPW2009 SP0 Win XP Pro 2002 SP3
Dell 690, Xeon 5160 @3.00GHz, 3.25GB RAM
nVidia Quadro FX4600
www.lumenflow.com

RE: 5&3/16" -16UN thread

I'm looking in ASME B1.1-2003 and it lists no 5 3/16-16 UN thread.

So there is no such thread.

However, 5 3/16-16 UNS would be a legitimate thread.  Essentially 'special' or custom.

I believe any decent machineries handbook or similar should have the equations, or at least information to allow you to work it out.

FAQ404-1480: How Do I Specify Unified Thread Form Custom Threads? Also gives you some helpful information and links to help you work it out.  

Just remember, if it's on the internet & free can you trust it?
 

KENAT,

Have you reminded yourself of FAQ731-376: Eng-Tips.com Forum Policies recently, or taken a look at posting policies: http://eng-tips.com/market.cfm?

RE: 5&3/16" -16UN thread

"I still suggest the OP look at the FAQ though." And perhaps do a topic search next time too....

I beat you to it? BooYah! I've been logged in nearly everyday for three years and I finally have something of moderate value to add. Yessss...
 

Harold
SW2009 SP2.0 OPW2009 SP0 Win XP Pro 2002 SP3
Dell 690, Xeon 5160 @3.00GHz, 3.25GB RAM
nVidia Quadro FX4600
www.lumenflow.com

RE: 5&3/16" -16UN thread

(OP)
thanks for all the input.... yes this thread is a custom "special thread" the we had 2 parts from the 50's but no drawings for them..... So I started measureing the major of the external and using in the machinery's handbook and interpolating the tolerances from a 5", 5&1/8", 5&1/4" came up with the piches and minors of course the thread was about .050" under the what a 5&3/16" would be.... and is the new part were made to 5 3/16 they would not interchange.... so to all thanks for the links to verify I was not out in left field when spec'ing out this thread....    

RE: 5&3/16" -16UN thread

smalld,

MIL-S-8879 (or its replacement AS8879) has a section (table VII) devoted specifically to controlled root radius 16-pitch threads up to 6 inches.  You can download it here for free:

http://www.assistdocs.com/search/search_basic.cfm

Good luck.
Terry

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