Appleton 29-300 Set Screw Rigid Conduit Coupling 3 Inch

Product Description

The APPLETON 29-300 is a Type 29 set screw coupling designed to join sections of threadless rigid metal conduit (RMC). Manufactured from malleable iron, it provides a durable mechanical connection without threaded conduit ends. The coupling measures 4.375 inches in length with an outside diameter of 4.219 inches and uses a set screw connection method to secure conduit sections in place. It carries UL certification under UL File Number E-11853 and meets UL 514A, Federal Specification A-A-50563, and ANSI/NEMA FB-1 standards. Licensed electricians install this fitting during conduit system assembly in commercial and industrial applications.

The 29-300 is intended for use where 3 inch threadless rigid metal conduit sections must be coupled together. This fitting is commonly installed in exposed or concealed conduit runs in commercial, industrial, and institutional wiring systems. The set screw design allows for secure conduit joining without requiring threading equipment on-site, making it practical in renovation and new construction environments where RMC is the specified raceway type.

Key Features

• Couples sections of 3 inch threadless rigid metal conduit without threaded conduit ends
• Malleable iron construction for durability in demanding installation environments
• Set screw connection provides a positive mechanical hold on conduit ends
• UL Listed under File Number E-11853 per UL 514A
• Meets ANSI/NEMA FB-1 and Federal Specification A-A-50563
• Outside diameter of 4.219 inches with a body length of 4.375 inches

Compatibility

Designed for use with 3 inch trade size threadless rigid metal conduit (RMC). Suitable for conduit coupling applications requiring compliance with UL 514A and ANSI/NEMA FB-1.

Installation Notes

Installation is performed by a licensed electrician in accordance with applicable NEC requirements for rigid metal conduit systems. De-energize all circuits in the work area before beginning conduit assembly. Insert conduit ends fully into each side of the coupling and tighten the set screws securely using the appropriate hex key or Allen wrench. Do not overtighten set screws to the point of deforming the conduit wall.