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.