Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 249
ead, an outline section of whichis shown in Fig. 318, is the British standard, and is generallyadopted on all screw-fastenings in British machine construc-tion. It has the sides of the V inclined to each other at anangle of 550, and has an amount rounded off at the top andbottom equal to \ of the… … Fig. 318. The depth of the finished thread S = I X 0.96/ = 0.64? (8) The pitch / = o.oZd +0.04 (9) Number of threads per inch 1 , I = — and p = — p r n (10) The diameter at the bottom of the thread will be given bythe formula 1.28 </,=^-2X O.64/ = d — (II) Exercise 2.—Draw 6 threads of the…
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