Chart for Determining the Helix Angles of Screw Threads
Description:
Chart showing graphically the relationships among diameters, leads, and helix angles of screw threads or other helical surfaces. The range of the chart includes diameters from 0.05 to 10 inches and 1 to 100 threads per inch. Diameters are represented by a vertical logarithmic scale, designated on each side of the chart, and leads on a horizontal logarithmic scale along the top. Vertical lines are drawn corresponding to threads per inch of the various standard systems and these are designated al…
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Date:
March 7, 1930
Creator:
Fullmer, Irvin Henry
Item Type:
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Partner:
UNT Libraries Government Documents Department