本美国国家标准适用于包含3.81-mm（0.150-in）宽磁带的未记录和记录盒式磁带，提出了盒式磁带的机械和磁互换性以及信息处理系统之间数据交换的最低要求，这些系统能够使用交换方商定的信息交换标准代码，使用32 bpmm（800 bpi）的数据密度。

This American National Standard for unrecorded and recorded cassettes containing 3.81-mm (0.150-in) -wide magnetic tape presents the minimum requirements for mechanical and magnetic interchangeability of the cassette and for data interchange between information processing systems, which are capable of utilizing a standard code for information interchange as agreed upon by the interchange parties, using a data density of 32 bpmm (800 bpi).