Steel chains of the type covered by this Standard were first introduced in the late 1930s. These chains met with considerable success on material conveying applications.
In 1973, a subcommittee of American National Standards Committee B29 was appointed to draft a standard for these hinge type flat top conveyor chains. This Committee was composed of interested members of the American Chain Association.
The standard developed by this Committee covered only those dimensions that affect interchangeability and interconnectability.
To promote the use of this Standard in international trade, metric equivalents of all dimensions and capacities are given.
The American National Standards Institute approved the previous edition of this Standard on June 21, 1983, and it was reaffirmed in 1995.
The Standard was modified in 1997 to include two straight running nonmetallic chains (24P26 and 24P86). This edition received ANSI approval on September 9, 1998.