Coupling Nuts (DIN 6334) – 304 (A2-70) Stainless Steel
These 304 (A2-70) stainless steel coupling nuts, made to DIN 6334, are elongated hex nuts used to join two lengths of threaded rod or studding end-to-end. They provide a strong, corrosion-resistant connection for hanging and support systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | DIN 6334 |
| Nut Type | Coupling Nut (elongated hex, length = 3 × d) |
| Thread | M6 – M20 (Metric Coarse, Right Hand) |
| Material | A2-70 (304) Stainless Steel |
| Surface Finish | Passivated |
| MOQ | 5,000 pcs (M3–M12), 1,000 pcs (M14+) |
| Lead Time | 5-12 days (standard), 15-25 days (custom) |
| Packaging | Bulk in cartons / Plastic bags / Custom labeling |
Applications
- Threaded-rod splicing (extending rod runs)
- Pipe supports and hangers
- Suspended ceilings and HVAC supports
- Anchor and tie-rod systems
- General studding extension
Certifications
ISO 9001:2015 certified manufacturing. Material test certificates (MTC) per EN 10204 3.1 available on request. RoHS and REACH compliant.
Frequently Asked Questions
What is a coupling nut used for?
A coupling nut (DIN 6334) is an elongated hex nut, three diameters long, used to join two pieces of threaded rod or stud end-to-end — for example to extend hanger rods, tie rods or support systems to the required length.
How does a coupling nut connect two rods?
Both rod ends are threaded into the coupling nut from either side (right-hand thread). For maximum engagement, thread both rods in equally; the long body of the nut gives each rod full thread engagement.
Why choose a stainless steel coupling nut?
A2-70 (304) stainless steel resists corrosion, so these coupling nuts suit outdoor, damp and marine hanging systems where zinc-plated nuts would rust and stain the surrounding structure.
Do you provide material certificates?
Yes. Material test certificates per EN 10204 3.1 are available on request, and our manufacturing is ISO 9001:2015 certified. RoHS and REACH compliance documentation can also be provided.