5/8-11 UNC 2A length?
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URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=7101
Printed Date: 01.Jun.2026 at 01:32
Topic: 5/8-11 UNC 2A length?
Posted By: griartejm
Subject: 5/8-11 UNC 2A length?
Date Posted: 02.Jan.2012 at 10:43
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Can you determine the length of a bolt with a callout 5/8-11 UNC 2A ?
im used to determine bolt call outs in metric, im getting confused on using American Standard Call out on threads. Help please! Thanks! ------------- Balot Penoy! |
Replies:
Posted By: philippe JOSEPH
Date Posted: 02.Jan.2012 at 11:20
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Hello, the bolt that you are talking with the "callout" 5/8-11 UNC 2A doesn't include the length.
5/8 means the diameter of 5/8 x 25.4 = 15.875 mm
11 means 11 threads per inch # 25.4/11 = 2.3090909... mm pitch
UN means UNified ( american standard )
C means Coarse ( standard big pitch versus Fine pitch )
2A means the tolerance of the fabrication ( standard )
The length of a 5/8 screw ( bolt = screw + nut ) is between 1" ( 25.4 mm ) and 6" ( 152.4 mm ) including :
1" , 1"-1/8 , 1"-1/4 , 1"-3/8 , 1"-1/2 , 1"-3/4 , 2" , 2"-1/4 , 2"-1/2 , 2"-3/4 , 3" , 3"-1/4 , 3"-1/2 , 3"-3/4 , 4" , 4"-1/2 , 5" , 5"-1/2 , 6"
You should also specify the material for example : Steel - Grade 5
You should also specify the "state fo delivery" ( protection )
Ask for more; you should read more informations about Unified Thred Standard on WIKIPEDIA or on school books if available for you.
I have an old example in PDF form of "CLARK Equipment" bolts standards that I can send to you on request.
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Posted By: griartejm
Date Posted: 02.Jan.2012 at 11:35
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thank you very much dude,yes please can you send me the sample ur talking about? ( mailto:=griartemichael@yahoo.com.ph" rel="nofollow - griartemichael@yahoo.com.ph )
quick question, can i specify the length of the thread in American Standard? for example:
5/8-11 UNC 2A 6" Length
What would be the proper representation for it if i want to include the length?
Thanks!
Thanks!
Thanks! Really helpful!  ------------- Balot Penoy! |
Posted By: heinsite
Date Posted: 05.Jan.2012 at 07:06
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This is what really is best about this particular discussion board... what one might call the "Value-Added Posts". Folks here don't just answer the immediate question at hand, they anticipate and provide that extra measure of useful information. Great answer, Philippe!  Dave ------------- Dave Hein, P.E. Hawaii District Engineer Kona International Airport AutoCAD Certified Professional Autodesk Expert Elite |
Posted By: philippe JOSEPH
Date Posted: 05.Jan.2012 at 07:58
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Dave, thanks a lot !!!
Your answer is too good for me comming from THE engineer of Hawaii ( just this makes me dreamming !! )
I found my contribution to this exellent forum normal as I'm already learning a lot every day ( and I'm using AutoCAD every day at work since AutoCAD R13 - 1995 ).
Without answering at every discussion I read all of them and learn a lot.
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