About Coupling Nuts
Coupling Nuts are specialized long nuts primarily used to join or couple two threaded rods or similar externally threaded components. Due to their elongated body, they are frequently referred to as long coupling nuts or extension nuts. Their primary function is to extend the length of a threaded assembly while maintaining structural alignment and load-bearing capacity.
The most common varieties include hex coupling nuts and round coupling nuts, with heavy hex options available for high-torque industrial applications. At Jade Alloys, our long coupling nuts are manufactured in both metric and imperial sizes, featuring thread profiles such as Unified National Coarse (UNC), Fine Pitch (UNF), and ISO Metric. These are produced across all material categories, including high-tensile alloys and corrosion-resistant stainless steel.
Coupling Nuts Properties
| Property | Details |
|---|---|
| Manufacturing | Hot Forged / Cold Forged |
| Metric Size | M3 to M72 |
| Imperial Size | 1/4” to 3” |
| Threads | Metric, UNC, UNF, BSW |
| Form | Fully Threaded / Partially Threaded |
| Standards | ASTM, ASME, DIN, ISO, BS, IS |
| Sub Types | As per product category |
Coupling Nuts Standards
| Standard | Size Range |
|---|---|
| ASME B18.2.1 / B18.2.2 | 1/4” to 3” |
| ASTM A194 / A193 | M6 to M72 |
| DIN 934 / DIN 6914 | M6 to M72 |
| ISO 4032 / ISO 7412 | M6 to M72 |
| BS 1769 | 1/4” to 2” |
| IS 1363 | M6 to M72 |
Coupling Nuts Specifications
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Check Nuts Weight Chart and Bolts Weight Chart to estimate quantities accurately for your project.
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