Overview
The Appleton SNTCC-50 is a threadless set-screw coupling manufactured for joining rigid metal and IMC (Intermediate Metal Conduit) at 1/2″ trade size. Built from steel with a concrete-tight design when taped, this coupling provides a secure, code-compliant connection for electrical conduit systems. This box contains 25 individual units ready for installation.
Key Features
- Threadless set-screw design for quick, tool-efficient installation
- Concrete-tight construction when taped for conduit embedded in concrete
- Steel material for durability and corrosion resistance in various environments
- Fits standard 1/2″ rigid and IMC conduit
- Box of 25 units for bulk jobsite use
Technical Specifications
- Part Number: SNTCC-50
- Manufacturer: Appleton Electric Company
- Conduit Size: 1/2″ (0.5″)
- Material: Steel
- Connection Type: Set Screw (Threadless)
- Outer Diameter: 1.13″
- Length: 2.31″
- Design Feature: Concrete-Tight When Taped
- Quantity per Box: 25 Units
- UPC Code: 781381121132
- Standards: UL and CSA Approved
Typical Applications
- Industrial electrical installations requiring secure conduit connections
- Commercial buildings where rigid metal conduit is specified
- Concrete-embedded conduit systems needing watertight sealing
- Maintenance and repair of existing rigid or IMC conduit runs
- Licensed electrician and contractor jobsite stock
Compatibility & Replacements
Compatible With
- 1/2″ Rigid Metal Conduit (RMC)
- 1/2″ IMC (Intermediate Metal Conduit)
- Standard electrical enclosure knockout openings
- Traditional electrical metallic tubing systems
Replaces / Drop-In Replacement For
- Previous generation Appleton set-screw couplings in 1/2″ size
- O-Z/Gedney equivalent threadless couplings (verify model compatibility)
- Legacy steel couplings of matching 1/2″ specification
Works With
- Standard set-screw installation tools (no threading required)
- Conduit tape for concrete-tight sealed applications
- Rigid metal conduit bending and assembly equipment
- Electrical grounding systems and bonding clamps








