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Notes on mechanical drawing; (1912)

Fry, Horace Pugh. [from old catalog] · Philadelphia [The John C. Winston co.] · leaf 56

An illustration from Notes on mechanical drawing;, 1912, leaf 56
6 -* /? = PITCH OF THREAD =14-NO. OF THREADS PER »NCH. /^= DEPTH OF THREAD = ^, A 5 =^ Z7-OUTSIDE DIAM. y=EFFECTJVE DIAM. AT ROOT = Z!)-^/^ = Z?-/? OIAM OFSCREW 1 S 38 /6 1 s 8 34 78 » 5 ^ 1 i THREADSPER INCH /O 3 a 7 6 H s ^k 4- 32 3^ 3 3 DIAM OFSCREW 1 1 ^ a -4 4 -% 3 ^i -i -1 A THREADS PER \NCH… … />= PITCH OF THREAD = l-f NO. OF THREADIS PER INCH.ZJ=OUTSlDE DIAM. OF SCREW. <^= DIAM. OF SCREW AT ROOT, NUMBER OFTHREADSPER INCH h DEPTH OFTHREAD / WIDTH AT POINT 1 ,5\Q0 .3 707 1/3 .3850 .2780 2 .2fcOO . 1853 3 .1 7G7 . / 235 4 .1350 .0927 5 .1 100 .0741 6 .0933 .0GI8 7 .0814 .0529 8 .07Z5…

Mechanical drawing

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