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Nuts

DIN 6334 Coupling Nuts

DIN 6334 coupling nuts are long hex nuts used to connect and extend threaded rods, studs and bolts. SENOTECH supplies metric coupling nuts in carbon steel and stainless steel with zinc plated, hot dip galvanized and custom finishes for construction, machinery, pipe supports and structural fastening.

Specifications

Standard
DIN 6334
Product Name
Coupling Nuts
Product Type
Hex Coupling Nut / Long Hex Nut
Material
Carbon Steel, Stainless Steel
Surface Finish
Zinc Plated, Black Oxide, Plain
Application
Threaded Rod Connection, Construction, Pipe Support, Machinery
Customization
Available
Designed to join two male-threaded components, the elongated hexagonal body provides substantially more thread engagement than a conventional hex nut while remaining easy to tighten with standard tools. This makes them a practical solution when threaded rods or studs need to be extended within an installation.
SENOTECH supplies DIN 6334 coupling nuts for fastener distributors, construction companies, machinery manufacturers and industrial project buyers. Common purchasing and search terms include hex coupling nuts, long hex nuts, extension nuts, threaded rod connectors and rod coupling nuts.

Threaded Rod Connection

One of the most common applications is connecting two sections of threaded rod to create a longer fastening or suspension assembly.
Coupling nuts can therefore be supplied together with:
  • Threaded rods
  • Hex nuts
  • Washers
  • Studs
  • Other project fasteners
This combination is widely used in construction, pipe support, HVAC, electrical installation and structural fastening systems.

Material & Surface Finish

Common options include carbon steel, stainless steel 304/A2 and stainless steel 316/A4.
Available finishes include:
  • Zinc Plated
  • Yellow Zinc Plated
  • Hot Dip Galvanized
  • Plain
  • Black
  • Customized Coatings
For outdoor construction and exposed installations, hot dip galvanized coupling nuts provide improved corrosion protection. Stainless steel coupling nuts are available where higher corrosion resistance is required.

Applications

Typical applications include:
  • Threaded rod extension
  • Construction fastening
  • Steel structures
  • Pipe support systems
  • HVAC installation
  • Electrical installations
  • Machinery assembly
  • Suspension systems

Bulk & Custom Supply

For importers, fastener distributors and project buyers purchasing coupling nuts in bulk, SENOTECH can supply different metric thread sizes, materials, finishes and packaging according to purchasing specifications.
Non-standard dimensions and drawing-based products can also be evaluated for OEM requirements.

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