Dormer E524 HSS UNF Hand Tap No 6 UNF Second

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Dormer E524 HSS UNF Hand Tap No 6 UNF Second

Achieve precise, clean threads in Unified National Fine (UNF) applications with the Dormer E524 Hand Tap. Engineered for accuracy and durability, this second tap is ideal for following a taper tap to complete through-hole threading or for starting in blind holes where a fully formed thread is needed near the bottom. Manufactured from premium high-speed steel, it delivers excellent wear resistance and consistent performance across a wide range of materials, including steel, aluminium, and brass. The Dormer E524 ensures reliable thread quality, reduces the risk of breakage, and extends tool life, making it a trusted choice for both professional engineers and serious home machinists.

- High-speed steel (HSS) construction for superior hardness and heat resistance

- UNF (Unified National Fine) thread form for fine-pitch threading in tight tolerance applications

- Second (intermediate) tap design for efficient cutting after a taper tap or for blind hole finishing

- Precision-ground flutes for smooth chip evacuation and reduced cutting torque

- Suitable for use in manual hand tapping and machine tapping operations

- Compatible with No 6 UNF thread size (0.138 inch diameter, 40 threads per inch)

- Durable geometry minimises tap breakage and extends service life

This hand tap delivers consistent, accurate threading with every turn.

GTIN: 7320760098110