BORDO INTERNATIONAL PTY LTD Bordo 7/8" x 14 UNF 2" Chrome Button Die

This 7/8” x 14 UNF Chrome Button Die is designed for repairing, restoring, and forming Unified National Fine (UNF) external threads. Split circular button dies are used with a die stock handle, making them ideal for maintenance tasks, repair work, and general-purpose thread cutting on a wide range of materials.
Key Features:

• Thread Standard: Unified National Fine (UNF), offering a finer thread pitch than Unified National Coarse (UNC).
• Versatile Use:
  • Ideal for chasing and cleaning damaged or contaminated threads.
  • Capable of cutting new male threads on non-ferrous metals and plastics.
• Material: Durable chrome alloy designed for general-purpose threading (not suitable for precision, structural, or critical applications).
• Thread Form Details:
  • UNF was introduced in 1948 to standardise thread systems in the USA, Canada, and the UK.
  • Thread profile matches metric thread geometry and is defined under JIS B0206.
  • Fine pitch provides a greater tensile stress area compared with coarse threads.
  • Fine threads offer improved resistance to stripping under load.
  • Ideal for applications with limited engagement length or where a finer pitch is required.

Technical Specifications:

• Diameter (inch): 7/8
• Pitch (TPI): 14
• Thread Form: UNF
• Outside Diameter: 2”

Applications:
UNF button dies are commonly used in automotive repair, engineering maintenance, machinery rebuilding, and applications requiring strong thread engagement with high stripping resistance. Their fine-thread profile makes them especially suitable for high-load or precision-fit assemblies.