scope:

The General Services Administration has authorized the use of this commercial item description.

This commercial item description covers quick-acting, self-locking couplings for pneumatic hose and piping connections where rapid coupling and uncoupling are required:

Coupling halves and fittings shall be of the following classes and sizes:

Glass H.M. - Male coupling half with hose end for 7/16 inch, ½ inch, ⅝ inch, ¾ inch, and 1-¼ inch hose. Class H.F. - Female coupling half with hose end for 7/16 inch, ½ inch, ⅝ inch, ¾ inch and 1-¼ inch hose. Class O.M. - Male coupling half with pipe end (external thread) for 7/16 inch through ¾ inch, or 1-¼ inch pipe. Glass O. F. - Female coupling half with pipe end (external thread) for 7/16 inch through ¾ inch, or 1-¼ inch pipe. Class Y.M. - Y-fitting with one female coupling inlet and two male coupling outlets for 7/16 through ¾ inch size, or 1-¼ inch size.