BS ISO 965-5-1998
ISO普通米制螺纹. 公差.第5部分:与镀锌前公差带位置为H最大尺寸的热浸镀锌外螺纹相匹配的内螺纹的极限尺寸

ISO general purpose metric screw threads - Tolerances - Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing

BS ISO 965-5-1998 发布历史

This part of ISO 965 specifies deviations and limits of sizes for pitch and crest diameters for ISO general purpose metric internal screw threads conforming to ISO 262 having basic profile according to ISO 68-1. Internal screw threads according to this part of ISO 965 are intended to mate with external screw threads with maximum size of tolerance position h before hot-dip galvanizing. The limits of sizes for the tolerance quality specified are derived from tolerances specified in ISO 965-1. The fundamental deviations for internal screw threads with a tolerance position AZ have been calculated according to the following formula: EIAZ = + (300 + 20P) where EI is expressed in micrometres; P is expressed in millimetres. The fundamental deviations for internal screw threads with a tolerance position AX have been calculated according to the following formula: EIAX = + (220P - 20) where EI is expressed in micrometres; P is expressed in millimetres. Products made with thread tolerances according to this part of ISO 965 may show load failure when tested in accordance with ISO 898-2 without adjustment of the other mechanical properties. Internal screw threads with thread tolerances according to this part of ISO 965 must not be mated with external screw threads having thread tolerances according to ISO 965-4 because such combinations will create severe risk of thread stripping. NOTE Internal screw threads with tolerance class 6AZ are primarily intended to mate with external screw threads centrifuged after hot-dip galvanizing. Internal screw threads with tolerance class 6AX are primarily intended to mate with hot-dip galvanized external screw threads with heavy coating not centrifuged.

BS ISO 965-5-1998由英国标准学会 GB-BSI 发布于 1999-04-15，并于 1999-04-15 实施。

BS ISO 965-5-1998 在中国标准分类中归属于: J13 紧固件，在国际标准分类中归属于: 21.040.10 公制螺纹。

BS ISO 965-5-1998的历代版本如下：

• 1999年04月15日 BS ISO 965-5-1998 ISO普通米制螺纹. 公差.第5部分:与镀锌前公差带位置为H最大尺寸的热浸镀锌外螺纹相匹配的内螺纹的极限尺寸
• 1999年04月15日 BS ISO 965-5-1999

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标准号

BS ISO 965-5-1998

发布日期

1999年04月15日

实施日期

1999年04月15日

废止日期

无

中国标准分类号

J13

国际标准分类号

21.040.10

发布单位

GB-BSI

被代替标准

92/75525 DC-1992

适用范围

This part of ISO 965 specifies deviations and limits of sizes for pitch and crest diameters for ISO general purpose metric internal screw threads conforming to ISO 262 having basic profile according to ISO 68-1. Internal screw threads according to this part of ISO 965 are intended to mate with external screw threads with maximum size of tolerance position h before hot-dip galvanizing. The limits of sizes for the tolerance quality specified are derived from tolerances specified in ISO 965-1. The fundamental deviations for internal screw threads with a tolerance position AZ have been calculated according to the following formula: EIAZ = + (300 + 20P) where EI is expressed in micrometres; P is expressed in millimetres. The fundamental deviations for internal screw threads with a tolerance position AX have been calculated according to the following formula: EIAX = + (220P - 20) where EI is expressed in micrometres; P is expressed in millimetres. Products made with thread tolerances according to this part of ISO 965 may show load failure when tested in accordance with ISO 898-2 without adjustment of the other mechanical properties. Internal screw threads with thread tolerances according to this part of ISO 965 must not be mated with external screw threads having thread tolerances according to ISO 965-4 because such combinations will create severe risk of thread stripping. NOTE Internal screw threads with tolerance class 6AZ are primarily intended to mate with external screw threads centrifuged after hot-dip galvanizing. Internal screw threads with tolerance class 6AX are primarily intended to mate with hot-dip galvanized external screw threads with heavy coating not centrifuged.

BS ISO 965-5-1998系列标准