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 334
Round and Square Countersunk Head Bolts Diameter Bolt Diameter Round Head ....Distance across Flats Square Head Thickness Square and Round Heads i It ¥ ft 4 1 1 h if H ft 1 11 13^ li ii^ A t\ -h i i 3% A H M Tap Bolts
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
