This Standard includes the following information on Leaf Chains: A series of link plates alternately assembled with pins in such a way that the joint is free to articulate between adjoining pitches. The main topics are (a) Description, (b) Numbering and marking system, (c) Assemblies and general proportions, (d) General chain dimensions for interchangeability, (e) Minimum ultimate tensile strength, (f) Tolerance for chain length, (g) Measuring load, and (g) Preload. This Standard also includes the following information on Clevises: (a) Design considerations, and (b) Clevis types.  This Standard also includes information on proportions of Sheaves. There are also Tables for (a) General Chain Dimensions, in. and mm, (b) Minimum Ultimate Tensile Strength, and (c) Dimensions for Anchor Clevises-Type B Leaf chain, in. and mm. There is also supplementary information on lubrication and maintenance.