What Is The Classification Of Hand Torque Wrenches (mechanical Torque Wrenches)?

- Jan 17, 2020-

Type I: Indicating

Class A: deflecting beam

Style 1: plain scale

Style 2: scale with signal mechanism

Style 3: scale with memory indicator

Class B: deflecting beam with interchangeable head

connection

Style 1: plain scale

Style 2: scale with signal mechanism

Style 3: scale with memory indicator

Class C: rigid housing

Style 1: plain scale

Style 2: scale with signal mechanism

Style 3: scale with memory indicator

Class D: rigid housing with interchangeable head connection

Style 1: plain scale

Style 2: scale with signal mechanism

Style 3: scale with memory indicator

Class E: screwdriver grip

Style 1: enclosed dial

Style 2: exposed dial

Type II: Setting

Class A: graduated

Style 1: non-ratcheting

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Style 2: ratcheting

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Style 3: interchangeable head connection

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Style 4: flexible ratchet head

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Class B: non-graduated

Style 1: non-ratcheting

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Style 2: standard ratcheting head

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Style 3: interchangeable head connection

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Style 4: flexible ratchet head

Design A: clockwise (right-hand) and counter

clockwise (left-hand) torquing

Design B: clockwise torquing

Design C: counterclockwise torquing

Type III: Limiting

Class A: screwdriver grip

Style 1: graduated

Design A: external square drive

Design B: internal hex drive

Style 2: non-graduated

Design A: external square drive

Design B: internal hex dive

Class B: “T” handle grip

Style 1: non-ratcheting

Style 2: ratcheting