Standard

ASME B1.9

Publisert
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Omfang

This standard relates to screw threads of buttress. form and provides: (a) A form of 7°/45° buttress thread with 0.6p basic height of thread engagement. (b) A table of preferred diameter-pitch combinations. (c) A formula for calculating pitch diameter tolerances (see Par. 6.1). (d) Tolerances for major and minor diameters (see Par. 6.2 and 6.3). (e) A system of allowances between external and internal threads (see Par. 7). (f) Recommended methods of measuring and gaging (see Par. 10 and 11). (g) Dimensional acceptability of buttress product (see Section 12). APPENDIXES The following appendixes are included in this standard: (1) Pitch Diameter Equivalents for Lead and Flank Angle Deviations (2) Pitch Diameter Measurement for External and Internal Buttress Threads (3) 7°/45° British Standard Buttress Thread with 0.4p Basic Height of Thread Engagement. The intent of this standard is not to preclude the use of other measuring or gaging systems provided they are properly correlated.

Dokumentinformasjon

  • Standard fra ASME_AC
  • Publisert:
  • Versjon: 0
  • Varetype: IS