Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 211
diameter measured atthe root of the thread is called the inside diameter. In the foregoing table of U. S. Standard ScrewThreads, the number of threads to one inch of screwto 4 in diameter. is given from i^ 234 ROGERS DRAWING AND DESIGN. The third column gives the diameter of the screwat the root,… … Fig. 338. . The screw thread is formed with straight lines atan angle of 60° to each other. The top and bottomof the thread are flattened, each to a width of ^^thof the pitch, Fig. 343. For small diameters of bolts the amount of flat-tening is not made to any particular measure, and in drawing…
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
