Machine drawing; a text and problem book for technical students and draftsmen (1921)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 27
Fig. 30. Square Threads. Two distinctive representations for square threads are shown inFig. 30. 31. Threaded Holes.—Representations for threaded holes are shownin plan, elevation, and section in Fig. 31. It will be observed that the … ^^/^; B Ellev^at/on lU-y f Section Fig. 31. Threaded Holes. £I/0y^afion lines representing the threads slope in the opposite direction when thehole is shown in section. The reason for this is that the far side of thethread is seen. Either single or double circles may be used in the plan,and any of…
Machinery
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