ASME B107.300-2021

This Standard provides performance and safety requirements for manually operated torque instruments, commonly used for measurement of torque to control the tightness of threaded fasteners. It also provides performance and safety requirements for manually operated
electronic torque instruments with integral or interchangeable heads. It includes requirements for endurance, torque value ranges, angle measurements, and accuracy for these torque instruments. It further provides performance and safety requirements for electronic torque testers used for checking manually operated, hand-held torque wrenches and torque screwdrivers. It is not intended to describe products infrequently utilized or those designed for special purposes.
This Standard may be used as a guide by state authorities or other regulatory bodies in the formulation of laws or regulations. It is also intended for voluntary use by establishments that use or manufacture the instruments covered.