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ISO 6788:1997

Assembly tools for screws and nuts - Four-way socket wrenches - Dimensions and torque test

This International Standard specifies the dimensions of socket heads, in millimetres, of four-way socket wrenches types 1, 2, 3 and 4 and also lays down test conditions to check the suitability of tool performance.

This International Standard applies to four-way socket wrenches for assembling screws and nuts with widths across flats of metric dimensions for trucks and cars.

The wrenches are listed under number 21 in ISO 1703.

Content Provider
International Organization for Standardization [iso]

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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.