This Standard contains information for specialized roller chains that are designed specifically as load chains for use in overhead hoists. The main topics are Roller load chain (a) General proportions; (b) Numbering system; (c) Minimum ultimate tensile strength; (d) Length tolerance; (e) Measuring load; (f) Preload; (g) Inspection; (h) Maintenance; and (i) Replacement of load chain. There is also a Table on General load chain dimensions.