What is a dart thread?
What is a dart thread? The connection between precision sports and thread technology
Darts – for many, just a pub pastime; for others, a highly precise sport with millimetre accuracy. But few people think about thread technology in this context. Yet, it's exactly there that an essential component for the function and durability of a dart lies: the so-called dart thread – usually the BA2 thread.
BA2 thread: What is it?
The dart thread is usually a so-called BA2 thread (British Association Thread No. 2). It originated in the UK and was developed in the 19th century as a fine thread for smaller screw connections. The BA thread is based on metric principles but has special pitch and flank angle values. The thread form is characterised by a flank angle of 47.5° and a different thread profile – ideal for fine and precise fastening.
The nominal diameter of the BA2 thread is approximately 4.7 mm with a pitch of 0.81 mm. This dimension has become the standard in the world of darts – hence the term "dart thread" is often used synonymously with "BA2".
Where is the dart thread located on the dart?
The dart thread connects the barrel (the main body of the dart) with the shaft – the rear part of the dart where the flights are attached. This connection must be absolutely precise and durable, as it is constantly stressed during play: by impact with the board, contact with other darts, and regular unscrewing for transport or replacement of components.
Why the thread connection is particularly stressed
Especially ambitious dart players frequently change their shafts – whether due to material, length, or style preferences. This constant screwing wears out the BA2 internal thread in the barrel over time. The result: worn-out threads, loose connections, and in the worst case, unusable darts. This is particularly annoying with high-quality darts – and avoidable.
VÖLKEL offers the solution: taps and dies for BA2
For exactly this case, VÖLKEL offers high-quality threading tools for the BA2 thread – for repairing damaged internal threads in the barrel as well as for producing new threads, e.g. in dart production or for custom darts.
Available products include:
- HSSE tap BA2 – for precise internal threads with long tool life
- HSSE-PM tap BA2 – powder metallurgically manufactured, especially robust and durable
- Die BA2 – for precise external threads on the shaft or other components
The difference between HSSE and HSSE-PM lies in the manufacturing process and performance: While HSSE (high-performance high-speed steel with cobalt) already delivers very good quality, HSSE-PM (powder metallurgical) offers even higher toughness and wear resistance – ideal for frequent use or harder materials.
Use cases: Repair and production
Whether you produce your own darts, want to save your favourite barrel, or simply want professional equipment – with VÖLKEL's BA2 tools you're on the safe side. Application is simple and precise and easy to handle with a tap wrench or die holder.
Availability & ordering
All taps and dies for BA2 are available from VÖLKEL directly from stock. So you don’t have to wait long – just order and use right away. Perfect for workshops, dealers, dart shops or dedicated hobby players with technical ambitions.
Conclusion: Small connection, big impact
The BA2 dart thread may seem inconspicuous at first glance, but it is a key element in the functionality of every dart. It not only connects components – it also stands for precision, durability, and performance. VÖLKEL provides the matching tools – professional, immediately available, and made for precision.
