1/2" Witworth Gewinde

English translation: 1/2" Whitworth thread

06:41 May 3, 2006
German to English translations [PRO]
Tech/Engineering - Engineering (general) / Sanitärzubehör
German term or phrase: 1/2" Witworth Gewinde
Leider nicht vorhanden.
RWSTranslation
Germany
Local time: 12:43
English translation:1/2" Whitworth thread
Explanation:
http://www.britishtool.com/bswpic.htm

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Note added at 8 mins (2006-05-03 06:49:51 GMT)
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"BSW" (see URL"bswpic") = "British Standard Whitworth", which is also used: "1/2" BSW" would describe the same thread.

--------------------------------------------------
Note added at 9 mins (2006-05-03 06:50:50 GMT)
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" Sir Joseph Whitworth proposed this thread in 1841. This was the first standardised thread form. The form of the thread is shown in the diagram. The principal features of the British Standard Whitworth (BSW) thread form are that the angle between the thread flanks is 55 degrees and the thread has radii at both the roots and the crests of the thread. The relevant standard for this thread form is BS 84: 1956. The thread form is now redundant and has been replaced by Unified and Metric threads. The British Standard Fine (BSF) thread has the same profile as the BSW thread form but was used when a finer pitch was required for a given diameter.

If
p = pitch of the thread
d = depth of the thread
r = radius at the top and bottom of the threads
then:
d = 0.640327 p
r = 0.137329 p "

http://www.boltscience.com/pages/screw4.htm
Selected response from:

Ian M-H (X)
United States
Local time: 06:43
Grading comment
vielen Dank
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +21/2" Whitworth thread
Ian M-H (X)
41/2" Whitworth Thread
Robin Hilder


  

Answers


5 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +2
1/2" Whitworth-Gewinde
1/2" Whitworth thread


Explanation:
http://www.britishtool.com/bswpic.htm

--------------------------------------------------
Note added at 8 mins (2006-05-03 06:49:51 GMT)
--------------------------------------------------

"BSW" (see URL"bswpic") = "British Standard Whitworth", which is also used: "1/2" BSW" would describe the same thread.

--------------------------------------------------
Note added at 9 mins (2006-05-03 06:50:50 GMT)
--------------------------------------------------

" Sir Joseph Whitworth proposed this thread in 1841. This was the first standardised thread form. The form of the thread is shown in the diagram. The principal features of the British Standard Whitworth (BSW) thread form are that the angle between the thread flanks is 55 degrees and the thread has radii at both the roots and the crests of the thread. The relevant standard for this thread form is BS 84: 1956. The thread form is now redundant and has been replaced by Unified and Metric threads. The British Standard Fine (BSF) thread has the same profile as the BSW thread form but was used when a finer pitch was required for a given diameter.

If
p = pitch of the thread
d = depth of the thread
r = radius at the top and bottom of the threads
then:
d = 0.640327 p
r = 0.137329 p "

http://www.boltscience.com/pages/screw4.htm

Ian M-H (X)
United States
Local time: 06:43
Native speaker of: Native in EnglishEnglish
PRO pts in category: 4
Grading comment
vielen Dank

Peer comments on this answer (and responses from the answerer)
agree  Robin Hilder: Hi Ian. Obviously took me too long to get the Machinery's Handbook off the shelf!
9 mins
  -> Thanks Robin. I'm now trying to resist the temptation to check BS 84 against BS 1083 - either way, Asker's got what he/she needs.

agree  David Moore (X)
58 mins
Login to enter a peer comment (or grade)

13 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
1/2
1/2" Whitworth Thread


Explanation:
Th correct spelling is with "Wh"

British Standard Whitworth Threads - BS 1083:1965

Machinery's Handbook 26th Edition Pages 1551 to 1554

12 Threads per Inch at 1/2"

From the designation of Sanitärzubehör I would however expected a 1/2" BSP thread

Robin Hilder
Local time: 12:43
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 28
Login to enter a peer comment (or grade)



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