Gibraltar 23090.0020 Coupling Nut M20x2.50 Steel

Product Description

The GIBRALTAR 23090.0020 is a standard coupling nut used to join or extend two externally threaded fasteners along a common axis. Machined from steel with a Grade 10 material specification and finished in black phosphate coating, this coupling nut is built for high-strength fastening applications where corrosion resistance and load capacity matter. The M20x2.50 right-hand thread profile matches standard coarse-pitch metric fasteners. With a 30mm width across flats and an overall length of 60mm, it fits standard metric wrenches and provides sufficient thread engagement for structural and mechanical connections.

This coupling nut is suited for industrial, mechanical, and construction applications that require threaded rod splicing, anchor bolt extensions, or heavy-duty fastener assemblies. It is commonly used in structural steel fabrication, machinery mounting, and general mechanical assembly where metric M20 fasteners are specified. The DIN 6334 standard designation confirms dimensional conformance, making it a reliable drop-in for jobs that call out that specification.

Key Features

• M20x2.50 right-hand thread for compatibility with standard coarse-pitch metric fasteners
• Grade 10 steel construction for high tensile strength and load capacity
• Black phosphate finish provides mild corrosion resistance and reduces galling during installation
• DIN 6334 standard compliance ensures dimensional consistency
• 30mm width across flats accepts standard metric open-end or box wrenches
• 60mm overall length provides extended thread engagement for rod-joining applications

Compatibility

Designed as a DIN 6334 standard coupling nut for use with M20x2.50 right-hand threaded rods, studs, and bolts in metric fastening assemblies.

Installation Notes

Installation is performed using a standard metric wrench sized to the 30mm width across flats. Ensure both mating threaded fasteners are clean, undamaged, and properly aligned before threading into the coupling nut. Apply a calibrated torque wrench for structural applications per the applicable project specification or engineering requirement. Inspect thread condition and confirm right-hand thread direction before assembly to avoid cross-threading or galling.