Overview
The Minerallac 7-B is a heavy-duty 3″ conduit hanger designed to securely support electrical conduit in industrial control systems and plant automation environments. Each hanger is zinc-plated for corrosion resistance and includes a bolt and nut for direct mounting to structural supports. This bulk box of 25 units is ideal for large-scale cable management projects, retrofit installations, and new builds requiring multiple conduit runs.
Key Features
- Compatible with 3″ EMT, Rigid, RMC, and IMC conduit
- Zinc-plated steel construction for durability in industrial environments
- Includes stainless steel bolt and nut for corrosion resistance
- Bolt-on mounting design allows fast, tool-friendly installation
- Size 7 hanger supports standard 3″ conduit OD specifications
- Box contains 25 hangers for economy in bulk projects
Technical Specifications
| Conduit Size | 3 inch (EMT, Rigid, RMC, IMC) |
| Hanger Part Number | 7-B |
| Conduit OD Range | 3.476 to 3.500 inch |
| Mounting Hole Size | 5/16 inch |
| Material | Zinc-plated steel (hanger), stainless steel bolt and nut |
| Load Rating | 165 lb |
| Quantity per Box | 25 units |
| Mounting Style | Bolt-on with nut |
| Manufacturer | Minerallac Co. |
Typical Applications
- PLC and control cabinet cable runs
- Drive and motor control installations
- Power distribution and signal conduit support
- Industrial automation system wiring
- Motor control centers and panel-to-panel conduit routes
- Structural steel and mounting frame conduit securement
Compatibility & Replacements
Compatible With
- 3″ EMT (Electrical Metallic Tubing)
- 3″ Rigid Steel Conduit
- 3″ RMC (Rigid Metal Conduit)
- 3″ IMC (Intermediate Metal Conduit)
- Industrial control enclosures and automation panels
Replaces / Drop-In Replacement For
- Minerallac 7 (standard zinc-plated version)
- Generic 3″ bolt-on conduit hangers with 5/16″ mounting hole
Works With
- 1/4″ rod or strut-based mounting systems
- Structural steel beams and supports
- Unistrut and similar channel systems
- Standard 5/16″ bolt and nut assemblies












