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 38
V4 12 IV4 IV32 1^7l6 7l6 732 ^7l6 ^/32 732 IVs 12 1^V32 1^764 2 78 74 1732 ^U 7l6 1V2 12 IV2 IV16 27l6 78 74 178 ^U 7l6 Screws are specified by their diameter, length and form. The diam-eter is generally given by gauge number. The length for flat head screws,stove bolts, etc., includes the head.… … n n E Fig. 54. Lock Nuts. 50. Locking Devices.—The vibration of machinery often causes nutsto become loose if they are not provided with some form of locking device.The commonest method is to use two nuts. They may be full size,three fourths thickness, or one full and one half thickness. The…
Machinery
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