HexTap Type DS - Double ended tap, Multi-Drive Form C HSS-G - UN 1.1/2 x 8

• Produce internal UN threads to the specified UN 1.1/2 x 8 geometry in prepared holes
• Use: thread cutting, re tapping, and thread cleaning depending on condition
• Process: manual driving or assisted driving depending on your holder and machine setup
• Use in workshop machining where access and alignment are managed manually

Note Use stable clamping and correct preparation, because a misaligned start can damage the first threads.

• Double ended design supports efficient handling when you have limited tool storage
• Multi Drive drive feature supports manual driving with common hand tools
• Form C chamfer supports predictable entry when the hole is prepared
• HSS-G supports accuracy for service and workshop threading tasks
• UN 1.1/2 x 8 designation supports clear assignment for maintenance documentation

• Form C lead requires correct starting alignment to avoid partial thread damage
• Not intended for high throughput manufacturing lines without process control

1. Stabilize the component with secure clamping.
2. Prepare the hole to the correct condition for tapping.
3. Use a driver that supports straight starting.
4. Align the tap square before you begin the cut.
5. Apply suitable cutting fluid.
6. Drive the tool with steady torque and avoid side loading.
7. Withdraw the tap to clear chips from the working area.
8. Verify thread engagement using a suitable mating part or gauge.

• 1 piece HexTap Type DS double ended tap for UN 1.1/2 x 8 UN internal threads

• Tool type: Double ended tap for internal threads
• Thread system: UN
• Thread size: UN 1.1/2 x 8
• Threads per inch: 8
• Chamfer: Form C
• Material: HSS-G
• Drive: Multi Drive

Question: What does the size UN 1.1/2 x 8 tell you?

Answer: It identifies the UN thread size and the 8 threads per inch value shown in the designation, so you can match the tap to the required fastener.

Question: When do you use a double ended tap instead of a multi piece hand tap set?

Answer: You use it when you want a compact tool format and you can maintain alignment by hand, for example during repair, rework, or low volume machining.

Question: How do you choose between manual driving and assisted driving?

Answer: Choose manual driving when you need fine feel and access is limited, and use assisted driving when you need steadier torque and your setup supports controlled alignment.

Question: What does Form C indicate in practice?

Answer: Form C refers to the lead geometry at the start of the tap, which affects how the tool enters the prepared hole and how you establish straight guidance.

Question: What should you watch when tapping larger UN sizes?

Answer: Keep the tap aligned, use suitable cutting fluid, and avoid side loading, because those factors influence thread accuracy and tool life.

Question: Where can you find technical information for HexTap DS?

Answer: Use the VÖLKEL PDF for specifications and guidance: Technical information HexTap DS as PDF

Question: Can you use the tool for thread cleaning only?

Answer: Yes, depending on thread condition you can use it to clean an existing thread, but you still need correct alignment and lubrication to avoid removing unnecessary material.

Question: Where can you find the VÖLKEL catalog for threading tools?

Answer: For an overview of the threading tools range and selection guidance, refer to: VD 23 catalog as PDF