Overview
The Halex 20512 is a 3/4″ clamp connector engineered for residential, commercial, and industrial electrical installations. Designed to connect non-metallic sheathed cable and flexible cord to a steel outlet box or other metal enclosure, this connector combines durability with corrosion resistance. Each box includes five units, making it an economical choice for electricians and contractors.
Key Features
- Twin-screw clamp design for secure non-metallic cable connections
- Die-cast zinc construction with 23/32″ diameter mounting hole
- Meets UL and CSA requirements and is corrosion resistant
- Reversible locknut cuts through protective coatings to assure ground connectivity
- Screw compatible with Phillips, slotted, and square screwdrivers
- Ideal for service entrances and other indoor applications
Technical Specifications
- Trade Size: 3/4 inch
- Material: Die-cast zinc
- Length: 1-13/32 inches
- Width: 15/16 inch
- Height: 1-11/16 inches
- Mounting Hole Diameter: 23/32 inch
- Cable Compatibility: #14/2 Round, #12/3 to 8/3 AWG Non-Metallic Cable or 0.46 to 0.72 inch Diameter Flex Cord
- Connection Type: Set-screw clamp
- Certifications: UL listed, meets CSA requirements
- Quantity per Box: 5 units
- UPC: 051411205126
Typical Applications
The Halex 20512 is widely used in:
- Residential electrical installations and panel upgrades
- Commercial building conduit runs and service entrances
- Industrial equipment wiring and control enclosures
- Utility boxes and junction box terminations
- Retrofit and remodel projects requiring quick, secure cable entry
Compatibility & Replacements
Compatible With
- Steel outlet boxes and metal enclosures
- Non-metallic sheathed cable (NM/NM-B)
- Flexible cord (0.46–0.72″ diameter)
- Standard electrical conduit systems
- Both wet location (with appropriate enclosure) and dry location installations
Replaces / Drop-In Replacement For
- Other 3/4″ zinc clamp connectors meeting equivalent UL/CSA standards
- Verify compatibility with your specific application before ordering
Works With
- Standard electrical installation tools (Phillips, slotted, square screwdrivers)
- NEC (National Electrical Code) compliant installations
- Residential, commercial, and industrial electrical systems






