Carlisle Hardcast 308267 J Nuts and Bolts Duct Fasteners

Product Description

The CARLISLE HARDCAST 308267 is a set of J nuts and bolts designed for connecting rectangular duct sections in sheet metal ductwork assemblies. These fasteners are sized to work with flanged duct connection systems, providing a secure mechanical joint between duct sections. The hardware is intended for use by licensed HVAC technicians and sheet metal contractors during ductwork fabrication and installation. Each component is engineered to deliver a consistent, reliable connection without overtightening or hardware mismatch.

These fasteners are used in commercial and residential HVAC ductwork applications where rectangular duct sections must be joined at flanged connections. They are specifically required for use with the Nexus J Flange System and Nexus Multi-Matic TDC/TDF Corners, where properly sized hardware is critical to maintaining a tight, low-leakage duct joint. Sheet metal mechanics and HVAC installers will encounter this hardware in new construction and retrofit ductwork projects alike.

Key Features

• Designed for use with the Nexus J Flange System and Nexus Multi-Matic TDC/TDF Corners
• Provides a simple and effective means of connecting rectangular duct sections
• Properly sized to match flanged duct connection hardware
• Mechanical fastener design supports consistent joint compression across the flange

Compatibility

Required fastener hardware for the Nexus J Flange System and Nexus Multi-Matic TDC/TDF Corners used in rectangular duct assemblies.

Installation Notes

Installation is performed by licensed HVAC technicians or certified sheet metal workers. Shut down and lock out the air handling system before working on ductwork connections. Use appropriate hand tools to seat the J bolt and nut securely without stripping the hardware. Follow local mechanical codes and SMACNA ductwork installation standards for flange connection requirements.

Technical Specifications

• Application: Rectangular duct flange connections
• Compatible Systems: Nexus J Flange System, Nexus Multi-Matic TDC/TDF Corners

Standard Information

• Brand: CARLISLE HARDCAST
• Manufacturer Part Number: 308267