BS ISO 1711-1:2019

What is BS ISO 1711-1 - wrench and socket technical specifications about?  

BS ISO 1711-1 specifies minimum values for Rockwell hardness and torsional strength for hand-operated wrenches and sockets. BS ISO 1711-1 covers the following three series of torsion torques: 

• Series A: usual box wrenches and socket wrenches 
• EXAMPLE 1 Reference nos. 1 1 02 01 0; 1 1 02 02 0 and 1 1 02 02 1; 1 1 02 03 0; 1 1 02 04 0; 1 1 02 05 0; 1 1 02 06 0; 1 1 02 09 0; 1 1 02 10 0; 1 1 02 11 0; 1 1 02 12 0; 1 1 02 13 0 and 1 1 02 13 1; 1 1 02 14 0; 1 1 02 15 0; 1 1 08 01 0; 1 1 08 02 0 
• Series C: open end wrenches 
• EXAMPLE 2 Reference nos. 1 1 01 01 0; 1 1 01 01 1; 1 1 01 02 0; 1 1 01 03 0; 1 1 01 04 0 
• Series E: hand-operated square drive sockets
• EXAMPLE Reference nos. 2 1 02 01 0 and 2 1 02 01 1 

Note: The wrenches and sockets mentioned above are listed under their respective reference numbers in ISO 1703. 

Who is BS ISO 1711-1 - wrench and socket technical specifications for? 

BS ISO 1711-1 on wrench and socket technical specifications is useful for: 

• Manufacturers of wrenches and sockets 
• Product designers / design engineers  
• Quality control personnel 

Why should you use BS ISO 1711-1 - wrench and socket technical specifications?  

A socket set is designed to help mechanics loosen, tighten and remove any nuts or bolts that are in a vehicle or machine. BS ISO 1711-1 states hardness and minimum torsional strength for hand-operated tools. BS ISO 1711-1 explains the requirements for test torsion torques and hardness testing. BS ISO 1711-1  also sets down the guidelines for testing hand-operated wrenches and square drive sockets. The torque testing of the tools has been described in detail in BS ISO 1711-1.  

Using BS ISO 1711-1 guidelines, you ensure that nuts and bolts are securely fitted on machines, ensuring the safety of end-users. 

What’s changed since the last update?  

BS ISO 1711-1:2019 is the fifth edition that supersedes BS EN 61158-4-21:2012 and is identical to IEC 61158-4-21: 2019. The technical changes as compared to the previous edition published in 2016 are:  

• General tolerances on opening have been added 
• Additional sizes 26 and 29 for width across flats have been added to Table 3 
• The structure of the document has been revised