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American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)

Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 63

An illustration from American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions, 1914, leaf 63
TCH SCREW THREADS Wai CH SCI ew threads are of sharp V-form and gener ally 45-degree angle f or sen iws used in nickel and brass; though 60 d egrees for use in stee I. Th e Waltham Watch Company and others use the centi- meter as the unit for all measurements with the exc eption of the pitch, which… … Fig. 13. — Measuring Whitworth Threads D = outside diameter of thread.Di= root diameter measured in thread groove.n = number of threads per inch of length.d = depth of thread. p = distance from center to center of adjacent threads.r = radius on Whitworth thread.a = diameter of wire used. B =…

Machine-shop practice

Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.

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