Tap (threading tool) FANAR GWINTOWNIK UNF No10-32 DIN-2181/2 (2B) HSS

FANAR GWINTOWNIK UNF No10-32 DIN-2181/2 (2B) HSS is a high-speed steel (HSS) machine tap designed to cut UNF No10-32 internal threads according to DIN 2181/2. Intended for producing 2B tolerance class threads, this tap is suitable for general-purpose threading in a range of metals and alloys. It can be used on tapping machines or by hand when mounted in the appropriate holder, and is commonly applied in repair, maintenance and small-series production environments.

Advantages

The HSS material provides a balance of hardness and toughness for cutting standard UNF threads in various ferrous and non-ferrous materials. Manufactured to DIN 2181/2 dimensions and tolerances, the tap ensures consistent thread geometry and fit for 2B internal threads. Its general-purpose design makes it versatile for workshop use, while compatibility with hand holders and machine tapping heads allows flexible application across different production setups.

Suitable for

• Cutting UNF No10-32 internal threads in steel and common non-ferrous alloys
• Repair and maintenance tasks requiring standard 2B tolerance internal threads
• Small-series or prototype production where machine taps are appropriate
• Hand tapping operations when used with a suitable tap holder

When it may not be suitable

This HSS general-purpose tap is not intended for high-volume production where carbide or coated taps would offer longer life and higher cutting speeds. It may also be less suitable for very hard or abrasive materials, stainless steels with high work-hardening tendencies, or operations requiring special flute geometry or coolant-through capability.

Key specifications

• Thread form: UNF (Unified National Fine)
• Size and pitch: No10-32
• Standard: DIN 2181/2 dimensional and tolerance requirements
• Tolerance class: internal 2B
• Material: high-speed steel (HSS)
• Application: machine tap, suitable for hand use with holder

How to use

Select a compatible tap holder or tapping head if machine use is intended, or a T‑handle or hand holder for manual tapping. Secure the workpiece and ensure the hole is drilled to the recommended core diameter for UNF No10-32. Apply appropriate cutting fluid for the workpiece material, start the tap square to the hole, and use controlled feed with periodic backing-off to clear chips. For machine tapping, follow the machine manufacturer's speed and feed recommendations for HSS taps and the specific material being cut.

What to consider before purchase

• Confirm that UNF No10-32 size and 2B tolerance meet the assembly requirements
• Verify the workpiece material and whether HSS is suitable or if a coated or carbide tap is needed
• Ensure compatibility with your tapping machine or hand holder
• Check drilling core diameter recommendations and availability of cutting fluid

Usage recommendations

Use cutting fluid appropriate for the material being tapped, maintain correct alignment to avoid thread damage, and back off regularly to break chips. For extended tool life in harder or abrasive materials, consider using coated or alternative tool materials.