C Cable Suspension Bolt
- Used for Clamps at strand crossovers and on steel cable crossarms.
- Bolt is a 5/8″ x 2-1/2″ Track Bolt.
- All components are Hot Dip Galvanized to meet ASTM Specification F2329.
- Description
Description
C Cable Suspension Bolt is a crucial piece of poleline hardware, specifically a heavy-duty through-bolt (often 5/8″ x 2-1/2″) used with matching “C” shaped clamps to securely attach figure-8 or jacketed messenger cables to telephone poles, providing support for power/communication lines without damaging the cable’s insulation. These galvanized steel assemblies create a strong grip using serpentine grooves and track bolts to handle tension on straight runs or gentle angles, ensuring safe and stable cable suspension.
Key Components & Function:
- C-Cable Clamp: Two mating steel or aluminum plates with serpentine (S-shaped) grooves that grip the messenger wire.
- Through Bolt: A large bolt (e.g., 5/8″ diameter) that passes through the center hole of the clamp and the pole, serving as a clamping member and attachment point.
- Nuts & Washer: Square nuts and often a washer secure the bolt, ensuring proper spacing and tension.
- Application: Supports self-supporting (figure-8) or jacketed cables on utility poles, ideal for straight lines or angles up to 25 degrees.
- Material: Typically made from ductile iron or steel, hot-dip galvanized for corrosion resistance.
How it Works:
- The C-clamp is placed around the cable.
- The through-bolt goes through the clamp’s center hole and a pre-drilled hole in the pole.
- As the nuts are tightened, the clamp’s plates squeeze the cable within the grooves, securing it firmly to the pole.
