Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 61
Fig. 96 F/g. 99 … F/g. 100 thread. Similarly, a triple or quadruple thread may be formed.In this manner a large lead may be obtained without lesseningthe strength of the screw. Split Nut and Square Thread. — A portion of a square threadedscrew, and a section of a nut for use with it are shown in Fig. 92.
Mechanical drawing
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