Screw Threads and Tap-drill Sizes

Screw Threads and Tap-drill Sizes
Jesse H. Jones, Secretary
Lyman J. Briggs, Director
Contents Pago
Promulgation ii
Purpose 1
Scope 1
Definitions 2
Symbols 7
Specifications 8
American National coarse-thread series 9
American National fine-thread series 12
Uniform-pitch screw-thread series for high-pressure fastenings, boiler
applications, machinery components, etc 24
Form of thread 24
Thread series 24
American National 8-pitch-thread series 24
American National 12-pitch-thread series 24
American National 16-pitch-thread series 25
American National extra-fine-thread series 38
Form of thread 38
Thread series 38
Sizes of tap drills 42
Labeling 53
Effective date 53
Standing committee 53
History of project 54
Acceptance of commercial standard 57
To the acceptors 58
Acceptors 59
Index 64
Commercial standards 6
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