ANSI/ASA S3.37-1987 耳后助听器用首选耳机挂钩管口螺纹

标准号：ANSI/ASA S3.37-1987
中文标准名称：耳后助听器用**耳机挂钩管口螺纹
英文标准名称：Preferred Earhook Nozzle Thread for Postauricular Hearing Aids
标准类型：L31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L31
国际标准分类号：11.180.15
适用范围：This standard describes a preferred thread for earhook nozzles on postauricular hearing aids. The need for such a standard arises from the wide variety of earhooks that hearing aid dispensers are required to keep in inventory to utilize different postauricular hearing aids from several manufacturers. This standard applies only to those postauricular hearing aids which utilize screw-on threads.