Illustrative drawing. Actual product is confirmed to your specification at quotation.
Nuts
Coupling Nuts
A coupling nut is a long internally threaded nut, normally about three times the thread diameter in length, used to join two threaded rods end to end or to extend a stud. Also called long nuts or extension nuts.
- Length about 3 × thread diameter
- Joins rods end to end
- Hex or round body
Specifications
- Material
- Carbon steelAlloy steelStainless steel A2 (AISI 304)Stainless steel A4 (AISI 316)
- Grade / property class
- Class 5Class 8A2-70
- Thread
- Metric coarse (ISO 261)Metric fine pitchUNC / UNF (imperial)
- Finish / coating
- PlainBlack oxideZinc plated (clear / yellow)Hot-dip galvanised
- Size range
- Up to M6M8–M12M14–M24M27–M48
- Standards
- DIN 6334
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Joining threaded rods
- Pipe hanger and strut supports
- Tie rods and extension of studs
- Formwork systems
- Maintenance lengthening
Related and complementary fasteners
Request a quote for Coupling Nuts
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of coupling nuts do you supply?
- We supply coupling nuts in Up to M6, M8–M12, M14–M24, M27–M48 size bands and grades/classes including Class 5, Class 8, A2-70. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do coupling nuts follow?
- Common standards are DIN 6334. Tell us the standard you need and we will quote to it.
- Can you supply in bulk or with test certificates?
- Yes. We quote for loose lots and scheduled bulk supply across India, and can share manufacturer test certificates where available. Confirm the requirement when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.