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Bolt Type Tension Clamp
The Bolt Type Tension Clamp is a dependable overhead line fitting engineered for strong conductor anchoring and long-term line stability. Designed for transmission and distribution applications, it provides secure gripping performance under high mechanical tension and harsh outdoor conditions.
With its robust bolted structure and galvanized steel construction, the clamp ensures reliable holding strength, excellent corrosion resistance, and efficient installation. It is widely used in utility and infrastructure projects where safety, durability, and stable conductor performance are essential.


Brand：SOCOME
Model：NLL
Material: Body, keeper - aluminum alloy, split pin - stainless steel, others -hot-dip galvanized steel.
Application: Overhead aerial power transmission and distribution lines up to 30kV.
The clamp grip strength exceeds 95% of the conductor breaking strength.
INQUIRY
Item No. Applicable conductor(mm) L l C d Failure load (kN) Weight(kg) Bolt size
NLL-1 5.1-11.4 135 102 17 16 40kN 0.75 2×M12
NLL-2 11.4-16 155 113 21 16 70kN 0.9 2×M12
NLL-3S 14.5-17.5 170 150 24 16 70kN 1.43 3×M12
NLL-3 14.5-17.5 245 190 30 18 70kN 2.37 3×M14
NLL-4S 18-22.4 227 170 31 16 90kN 2.65 4×M14
NLL-4 18-22.4 280 245 31 18 90kN 3.18 4×M14
NLL-5 23-30 350 235 38 20 120kN 4.5 5×M16

What is the Bolt Type Tension Clamp?

The Bolt Type Tension Clamp is a heavy-duty line fitting designed for anchoring and tensioning overhead conductors in power transmission and distribution systems. It is widely used to securely hold conductors at dead-end or angle positions ensuring stable mechanical support and reliable line performance.
Made from high-strength hot-dip galvanized steel the clamp provides excellent durability and corrosion resistance for long-term outdoor use.

How it Works

The Bolt Type Tension Clamp works by tightening multiple bolts to firmly grip the conductor and generate strong holding force. The bolted clamping structure evenly distributes pressure on the conductor surface reducing slipping and minimizing conductor damage during operation.
Once connected to pole or tower hardware the clamp withstands conductor tension mechanical loads and environmental stress to maintain safe and stable line operation.

Benefits

  • Strong Grip Strength：Provides secure conductor anchoring with high mechanical holding force.
  • Durable Construction：Hot-dip galvanized steel ensures excellent corrosion resistance and long service life.
  • Reliable Mechanical Performance：Designed to withstand heavy tension and harsh outdoor conditions.
  • Easy Installation：Simple bolted structure allows fast installation and maintenance.
  • Stable Line Support：Reduces conductor movement and improves transmission stability.
  • Wide Application Range：Suitable for overhead transmission and distribution line systems.
 

Item No. Applicable conductor(mm) L l C d Failure load (kN) Weight(kg) Bolt size
NLL-1 5.1-11.4 135 102 17 16 40kN 0.75 2×M12
NLL-2 11.4-16 155 113 21 16 70kN 0.9 2×M12
NLL-3S 14.5-17.5 170 150 24 16 70kN 1.43 3×M12
NLL-3 14.5-17.5 245 190 30 18 70kN 2.37 3×M14
NLL-4S 18-22.4 227 170 31 16 90kN 2.65 4×M14
NLL-4 18-22.4 280 245 31 18 90kN 3.18 4×M14
NLL-5 23-30 350 235 38 20 120kN 4.5 5×M16

What is the Bolt Type Tension Clamp?

The Bolt Type Tension Clamp is a heavy-duty line fitting designed for anchoring and tensioning overhead conductors in power transmission and distribution systems. It is widely used to securely hold conductors at dead-end or angle positions ensuring stable mechanical support and reliable line performance.
Made from high-strength hot-dip galvanized steel the clamp provides excellent durability and corrosion resistance for long-term outdoor use.

How it Works

The Bolt Type Tension Clamp works by tightening multiple bolts to firmly grip the conductor and generate strong holding force. The bolted clamping structure evenly distributes pressure on the conductor surface reducing slipping and minimizing conductor damage during operation.
Once connected to pole or tower hardware the clamp withstands conductor tension mechanical loads and environmental stress to maintain safe and stable line operation.

Benefits

  • Strong Grip Strength：Provides secure conductor anchoring with high mechanical holding force.
  • Durable Construction：Hot-dip galvanized steel ensures excellent corrosion resistance and long service life.
  • Reliable Mechanical Performance：Designed to withstand heavy tension and harsh outdoor conditions.
  • Easy Installation：Simple bolted structure allows fast installation and maintenance.
  • Stable Line Support：Reduces conductor movement and improves transmission stability.
  • Wide Application Range：Suitable for overhead transmission and distribution line systems.

 

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