龙头编号系统

[中文适用范围]： 本 SAE 推荐实践提供了一种系统方法，用于识别英制尺寸最大为 9.999 英寸、每英寸最大螺纹数为 99.9 的磨制螺纹丝锥，以及公制尺寸最大为 99.9 毫米、最大螺距为 9.99 毫米的磨制螺纹丝锥。它旨在帮助对这些工具进行编目和提供。它不适用于 ACME、偏梯形或类似类型的螺纹形式。 [外文原描述]： This SAE Recommended Practice provides a systematic method for the identification of ground thread taps for inch sizes up to 9.999 in with a Maximum Thread-per-Inch of 99.9, and Metric sizes up to 99.9 mm with a Maximum pitch of 9.99 mm. It is intended to assist in the cataloging and supplying of these tools. It is not intended for ACME, Buttress, or similar type thread forms.NOTE 1— Caution must be taken when assigning codes to prevent specifying taps that cannot be physically or economically manufactured.NOTE 2— The Code Number coming from the manufacturer MUST reflect the actual tool construction.NOTE 3— In particular without limitation, SAE disclaims all responsibility for the accuracy or completeness of information contained within this report if the StandardDetails of this report are retrieved, combined, or used in connection with any software.Cross Reference: ASME/B94.9,DINEN25967,ISO2283,ISO2284,ISO2857,ISO529,ISO5967,ISO8051,ISO8830,JISB4430,JISB4432,JISB4433,JISB4438,JISB4439,JISB4445,JISB4446