本标准针对含有0.250英寸（6.30毫米）磁带的未记录盒式磁带，采用美国国家信息交换标准代码ANSI X3，提出了信息处理系统、通信系统和相关设备之间盒式磁带机械和磁互换性的最低要求。4:1977（ASCII）。本标准仅指用于数字记录的磁带和标准长度或长长度盒带，并补充了美国国家标准ANSI X3。56:1977.

This standard for an unrecorded cartridge containing 0.250-inch (6.30 mm) magnetic tape presents the minimum requirements for the mechanical and magnetic interchangeability of the cartridge between information processing systems, communications systems, and associated equipment using the American National Standard Code for Information Interchange, ANSI X3.4:1977 (ASCII). This standard refers solely to the magnetic tape and standard length or long length cartridges for digital recording and complements American National Standard, ANSI X3.56:1977.