Imperial BSW Plug Thread Gauges.

What are Imperial BSW Plug Thread Gauges?

Imperial BSW (British Standard Whitworth) Plug Thread Gauges are precision tools designed to inspect and verify the accuracy of internal threads that conform to the BSW standard. BSW threads are characterised by their rounded crests and roots, with a thread angle of 55 degrees. These gauges ensure that the internal threads in components such as nuts and tapped holes meet exact tolerances, guaranteeing compatibility and secure connections in mechanical assemblies.

How Imperial BSW Plug Thread Gauges Work

Imperial BSW Plug Thread Gauges are used to check the quality of internal threads by inserting the gauge into the threaded hole. A "Go" gauge fits smoothly without excessive force, confirming that the internal thread meets the minimum size requirement. A "No-Go" gauge should not engage fully, ensuring the thread does not exceed the maximum allowable size. This process is essential for quality control in applications like vintage machinery restoration or legacy infrastructure maintenance, where BSW threads are often encountered. For example, these gauges are used in the refurbishment of classic British vehicles to ensure new or rethreaded components match original specifications.

The Size and Types of Imperial BSW Plug Thread Gauges Available

Imperial BSW Plug Thread Gauges are available in a variety of sizes that correspond to standard BSW thread specifications. These typically range from 1/8 inch to 2 inches in diameter, covering common thread pitches such as 20, 18 and 16 threads per inch, depending on the size. Both "Go" and "No-Go" gauges are required for comprehensive thread inspection, ensuring internal threads conform to both minimum and maximum tolerance requirements.

FAQs

Q: What is the purpose of BSW Plug Thread Gauges?

A: BSW Plug Thread Gauges verify the accuracy of internal threads, ensuring they conform to BSW standards for reliable and secure connections.

Q: Why are BSW threads still in use?

A: BSW threads are common in legacy equipment, classic vehicles and certain industrial applications, making these gauges essential for maintenance and restoration projects.

Q: Can these gauges be used for older components?

A: Yes, BSW Plug Thread Gauges can verify the dimensions of internal threads in both new and existing components to ensure they meet BSW specifications.

Bespoke Imperial BSW Plug Thread Gauges Manufacture.

High precision, bespoke manufacture of Imperial BSW Plug Thread Gauges to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.