The purpose of this specification is to provide standardsfor design, manufacture, and testing of hoisting equipmentsuitable for use in drilling and production operations.EQUIPMENT COVEREDThis specification covers the following drilling and productionhoisting equipment: Crown block sheaves and bearings; Traveling blocks and hook blocks;Block to hook adapters; Connectors and link adapters; Drilling hooks; Tubing and sucker rod hooks; Elevator links; Casing, tubing, drill pipe, and drill collar elevators; Sucker rod elevators; Rotary swivel bail adapters; Rotary swivels;Power swivels; Power subs; Spiders, when capable of being used as elevators; Wireline anchors; Drill string motion compensators; Kelly spinners when capable of being used as hoisting equipment; Pressure vessels and piping mounted onto hoisting equipment; Safety clamps, when capable of use as lifting devices.