Hale, Joseph W. L. (Joseph Woodwell Ledwidge), 1886- · New York [etc.] McGraw-Hill book company · leaf 41
m. and above,screwed into boilers, 12 sharp V threads per in. are used, Fig. 27. 26 MECHANICS AND ALLIED SUBJECTS irrespective of the diameter of the bolt or stud, the pre-ceding rule becomes in this case: R=D-^ or R = D 12 0.144 m.or R = D - %4^ in. In the case of the U. S. Std. thread as in Fig.… … Fig. 28. = diameter of bolt — 2 X 0.65 X the pitch. The pitch = rf, where T is the number of threads per ino Therefore diameter at root of thread for U, S. Std. = diameter of bolt 7^7- 17. Construction of a Single, Square Thread, 2 ThreadsPer Inch. Fig. 29 Shows the Method of Construction. 18.…
Mechanics, Applied
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