 | William Sellers & Co. (Philadelphia, Pa.) - 1877 - 326 pages
...equal to one and a half diameters of the bolt plus one-eighth of an inch. The thickness of the heads for a rough bolt shall be equal to one-half the distance...thickness of the nut shall be equal to the Diameter of bolt... } A i A i A f I f \\l\ is H If H 1* 1} 1} No. threads per in. 20 18 16 14 13 12 11 10 9 8 :... | |
 | Sellers, William, & Co., Philadelphia - Machine-tools - 1877 - 314 pages
...equal to one and a half diameters of the bolt plus one-eighth of an inch. The thickness of the heads for a rough bolt shall be equal to one-half the distance...thickness of the nut shall be equal to the Diameter of bolt... ! A 1 ft J A 1 1 1 1 i; H i; H If 4 1* No. threads per in. 20 18 16 14 1:1 12 11 10 9 8 7 7... | |
 | Fred Herbert Colvin, Frank Arthur Stanley - Machine-shop practice - 1908 - 550 pages
...of the bolt plus one-eighth of an inch. The thickness of the head in this system for a rough bolt is equal to one-half the distance between its parallel sides. The thickness of the nut is equal to the diameter of the bolt. The thickness of the head for a finished bolt is equal to the... | |
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... surface at the top and bottom equal to one-eighth of the pitch. The pitches shall be as follows, viz. : '•' The distance between the parallel sides of a bolt head and nut, for a rough bolt, shall be equal to one and a half diameters of the bolt... 