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Copper Nuts, Copper Hex Nuts

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Copper Nuts Copper hex Nuts

High Quality Copper Nuts Hex Nuts

Copper hex nuts, Copper Square nuts, Copper cold forged nuts, CNC machined Copper nuts are essential fasteners used in various industrial and electrical applications. Renowned for their excellent electrical conductivity, corrosion resistance, and thermal performance, these nuts are ideal for demanding environments where reliability and durability are critical.

Material Grades

  1. C11000 (ETP Copper) – Electrolytic Tough Pitch
  2. C10200 (OF Copper) – Oxygen-Free
  3. CDA 464 (Naval Brass) – For marine applications
  4. C36000 (Free-Cutting Brass) – For high-volume production

Manufacturing Processes

Hot Forging

  • Temperature range: 650-870°C
  • Suitable for grades: CDA 464, C36000
  • Better grain structure and strength

Machining

  • CNC turning and threading
  • Hexagonal broaching
  • Suitable for all grades
  • Preferred for precision requirements
  • Typical cutting speed: 150-300 m/min
  • Feed rate: 0.1-0.2 mm/rev

Thread Standards

Metric (ISO)

  • M6 to M64
  • Coarse thread series (standard)
  • Fine thread series (for specific applications)
  • Class 6H internal threads

Imperial (UNC/UNF)

  • 1/4″ to 2″
  • UNC (Coarse): Most common
  • UNF (Fine): For precision applications
  • Class 2B internal threads

Standard Dimensions

Metric Hex Nuts (ISO 4032, DIN 934)

 
Thread SizeHex Width (mm)Height (mm)
M6105
M8136.5
M10178
M121910
M162413
M203016
M243619

Imperial Hex Nuts (ASME B18.2.2)

 
Thread SizeHex Width (in)Height (in)
1/47/167/32
3/89/1621/64
1/23/47/16
5/815/1635/64
3/41-1/841/64

International Standards

  • ISO 4032: Hexagon regular nuts (style 1)
  • DIN 934: Hexagonal nuts
  • ASTM B16: Free-cutting brass rod, bar, and shapes
  • BS 3643: ISO metric screw threads

Tolerances

Dimensional

  • Width across flats: ±0.2mm
  • Height: ±0.3mm
  • Thread pitch diameter: 6H (ISO), 2B (UNC/UNF)

Surface Finish

  • Machine finish: 1.6-3.2 μm Ra
  • Polished finish: 0.4-0.8 μm Ra

Applications

Power Industry

  • Transformer terminal connections Spade Connectors
  • Busbar joints
  • Switchgear terminations
  • Current carrying components
  • Bronze Vise Connctors
  • Copper Terminals, Bronze Terminal assembly

Marine Industry

  • Shipbuilding
  • Offshore platforms
  • Marine equipment
  • Underwater applications

Chemical Industry

  • Process equipment
  • Corrosive environments
  • Chemical handling systems

Special Requirements

  1. Electrical
    • Conductivity: >75% IACS
    • Current rating based on size
    • Operating temperature: -40°C to 150°C
  2. Mechanical
    • Torque values: 30-40% lower than steel
    • Regular retightening may be required
    • Use with compatible washers
  3. Environmental
    • Corrosion resistant
    • Suitable for marine environments
    • Temperature limitations

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