ANSI/ASME B1.30-2002
螺纹:尺寸计算和尺寸修约的标准实施规程

Screw Threads: Standard Practice for Calculating and Rounding Dimensions

ANSI/ASME B1.30-2002 发布历史

The purpose of this Standard is to establish uniform and specific practices for calculating and rounding the numeric values used for inch and metric screw thread design data dimensions only. No attempt is made to establish a policy of rounding actual thread characteristics measured by the manufacturer or user of thread gages. Covered is the Standard Rounding Policy regarding the last figure or decimal place to be retained by a numeric value and the number of decimal places to be retained by values used in intermediate calculations of thread design data dimensions. Values calculated to this Standard for inch and metric screw thread design data dimensions may vary slightly from values shown in existing issues of ASME B1 screw thread standards and are to take precedence in all new or future revisions of ASME B1 standards as applicable except as noted in para. 1.2.

ANSI/ASME B1.30-2002由美国国家标准学会 US-ANSI 发布于 2002。

ANSI/ASME B1.30-2002 在中国标准分类中归属于: J05 结构要素，在国际标准分类中归属于: 21.040.01 螺纹综合。

ANSI/ASME B1.30-2002的历代版本如下：

• 2002年 ANSI/ASME B1.30-2002 螺纹:尺寸计算和尺寸修约的标准实施规程

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标准号

ANSI/ASME B1.30-2002

发布日期

2002年

实施日期

废止日期

无

中国标准分类号

J05

国际标准分类号

21.040.01

发布单位

US-ANSI

被代替标准

ANSI/ASME B1.30M-1992

适用范围

The purpose of this Standard is to establish uniform and specific practices for calculating and rounding the numeric values used for inch and metric screw thread design data dimensions only. No attempt is made to establish a policy of rounding actual thread characteristics measured by the manufacturer or user of thread gages. Covered is the Standard Rounding Policy regarding the last figure or decimal place to be retained by a numeric value and the number of decimal places to be retained by values used in intermediate calculations of thread design data dimensions. Values calculated to this Standard for inch and metric screw thread design data dimensions may vary slightly from values shown in existing issues of ASME B1 screw thread standards and are to take precedence in all new or future revisions of ASME B1 standards as applicable except as noted in para. 1.2.