Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 346
1397. BALL SOCKET, with a screweland. V THREAD … 1398. SCREW THREADS.—StandardV thread, sharp at top and bottom. Depthequals 0.85 of the pitch. Angle 60°. U.S. S. THREAD
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
