File:EB1911 - Screw - Fig. 1.png
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Summary
| Description |
English: Fig. 1.—Sections of principal Screw Threads.
Formulae: p=pitch, or distance between centres of contiguous threads; d=depth of thread; h=total height of thread construction; r=radius; f=flat. A. Whitworth thread. h=0·9605 p; d=0·6403 p; leaving 16th h to be rounded at top and bottom. B. Sellers, or Franklin Institute, or U.S. standard thread. h=0·866 p; d=0·6495 p; f=18th p. C. Sharp Vee thread. d=0·8660 p. D. British Association standard thread. d=0·6 p; r=211th p. E. C.E.I. or Cycle Engineers' Institute standard thread. h=0·866 p; d=0·5327 p; r=12th p. F. Löwenherz or Delisle thread (metric, used largely on the continent of Europe). h=p; d=0·75 h; f=18th h. G. International standard thread (metric)., d=0·6495 p; f=18th h; r=116th h. H. Thury thread (metric). d=35th p; r=15th p; r′=16th p. J. Square thread. d=12 p. K. Acme thread. d=12 p+0·010; f=0·3707 p. |
| Date | |
| Source | https://en.wikisource.org/wiki/Page:EB1911_-_Volume_24.djvu/498 |
| Author | Encyclopædia Britannica |
Licensing
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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| current | 15:25, 12 June 2023 | | 913 × 830 (192 KB) | Sp1nd01 | Uploaded a work by Encyclopædia Britannica from https://en.wikisource.org/wiki/Page:EB1911_-_Volume_24.djvu/498 with UploadWizard |
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