Round Die BS 1127 HSS - BA 2 x 31.35
€12.50
VÖLKEL Round Die BS 1127 HSS - BA 2 x 31.35
This VÖLKEL Round Die BA 2 is your specialist tool when it comes to the precise cutting of external threads on dart shafts. Made from high-quality HSS steel, it is designed for general use and is ideal for cutting new threads or calibrating existing external threads. This die is the perfect complement to your tap to guarantee an exact and robust connection between the dart barrel and shaft.
Would you like to learn more? Click here to read our blog post about dart threads.
Special Feature: The HSS Steel and Form H
This die is specialized for the unique BA2 thread, which is the standard for the connection between the barrel and shaft on darts. It is manufactured in Form H according to standard BS 1127 and is made of high-quality HSS-G steel. The die is used in a die stock to cut the precise external thread on the shaft. A perfect addition for the repair or manufacturing of darts.
In our assortment, you will also find suitable taps for the internal thread in the barrel:
Area of Application & Features
The die is suitable for general use under the following conditions:
- For easily machinable materials up to 800 N/mm².
- Optimal for unalloyed and low-alloy steels.
- Suitable for hand threading.
- For manufacturing and repairing external threads.
Step-by-Step Instructions for Threading
Here's how you cut an external thread on a dart shaft:
- Prepare: Securely clamp the workpiece (e.g., the shaft) in a vice. The diameter should correspond to the core diameter of the thread.
- Position: Place the die with the appropriate die stock straight on the end face of the workpiece.
- Cut the thread: Turn the die with firm pressure and a uniform motion clockwise into the material. After half a turn, turn a quarter turn back to break the chips.
- Clean: Remove all chips and clean the newly cut thread.
- Test: Check the fit of the external thread by carefully screwing on a dart barrel.
Technical Data
- Thread Type: BA-thread BS 93
- Standard: BS 1127
- Form: Form H
- Material: HSS-G
- Nominal Dimension: Nominal BA 2
- Outer Diameter: 20.6 x 6.35 mm
- EAN: 4022835890027
- Article Number: 89002
Frequently Asked Questions (FAQ)
- What is the difference between a tap and a die?
- A tap is used for manufacturing internal threads (e.g., in the dart barrel). A die is used for manufacturing external threads (e.g., on the dart shaft).
- Which materials is this die suitable for?
- This die is optimized for easily machinable materials with a tensile strength up to 800 N/mm², especially unalloyed and low-alloy steels.
- Can I use this die to create other threads?
- The die is designed exclusively for the specialized BA2 thread, as it has a unique geometry and a special flank angle.
- What does "HSS-G" mean?
- HSS-G stands for "High-Speed Steel Ground". It denotes a high-quality high-speed steel with a ground finish, which provides a precise cutting edge and a good service life.
- How do I ensure the cut thread fits perfectly?
- Make sure to position the die straight at the beginning. Use cutting oil and break the chips regularly by briefly reversing the direction of rotation. The final check with the matching internal thread in the dart barrel gives you certainty.
| Type of thread | BA-Thread |
|---|---|
| Standard | BS 1127 |
| Form | splitted version (Form A) |
| Material | HSS |
| Tolerance | medium |
| Size | BA 2 x 31.35 |
| Outer diameter | 13/16 |
| EAN | 4022835890027 |
| Item number | 89002 |
| Thread standard | BS 93 |
| Rec. Bolt diameter | 4.62 mm |
