Specification for cycle (B.S.C.) threads (formerly known as C.E.I. threads)

Specification for cycle (B.S.C.) threads (formerly known as C.E.I. threads)

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What is BS 811 - British standard cycle threads about? 

The British standard cycle is a British imperial screw thread standard made for bicycle and motorcycle applications. British standard cycle thread is used with both bicycles and motorcycles applications. 

BS 811 focuses on British standard cycle threads. BS 811 provides specifications for British standard cycle threads. BS 811 also specifies the basic dimensions and limits and tolerances for British Standard cycle threads. BS 811 provides threads specifications for spokes and nipples and for bolts and nuts and similar applications. BS 811 also covers the bases of the tolerances and illustrates the tolerance zones on the threads. 

Who is BS 811 - British standard cycle threads for? 

BS 811 on British standard cycle threads is useful for: 

  • Cycle and motorcycle manufacturers and traders 
  • The bicycle industry 
  • Design engineers 
  • Mechanical engineers 
  • Organizations that design, build and maintain cycle threads 
  • Industries that make use of cycle threads 
  • Research and development team 
  • Quality control personnel 
  • Inspection bodies 

Why should you use BS 811 - British standard cycle threads 

BS 811 provides you with dimensions, Limits and tolerances for British Standard cycle threads for bolts and nuts and for special applications. BS 811 also provides you with dimensions, Limits and tolerances for British Standard Whitworth form threads for bolts and nuts. 

BS 811 provides you with design and dimension guidelines that you need to adhere to. Following the dimension specifications given in BS 811 helps you to design effective British standard cycle threads. 

Following the guidelines provided in BS 811, creates a standardized approach for you, and you can deliver high-quality British standard cycle threads and related components to your customers. These customers will be able to safely use British standard cycle threads.