Fiberglass Extension Arm

Features and benefits

  • ASTM F711 compliant
  • Dual crossarm brackets to fit up to a 6” x 6” crossarm
  • Fits up to 1.6” cable
  • Rated for 34.5kV with insulators and 15kV without insulators
  • Easy to install
  • Furnished with bronze eye bolts


The Slingco Fiberglass Extension Arm is used to move conductor to create working clearance in congested areas, or as a temporary aid in replacing insulators and/or conductor. The Fiberglass Extension Arm complies with ASTM F711, OSHA 1910.269 (j)(l), and OSHA 1926.957 (a)(l). The arm is rated for 34.5kV with insulators and 15kV without insulators.

It includes a double bracket system that will fit over crossarms up to 6” x 6”. The wire holders will accommodate cables up to 1.6” in diameter. The Slingco Fiberglass Extension Arm includes a QR code so the manual and instructions are always accessible in the field - just scan to view on your mobile.

Slingco offers an optional retrofit kit to protect fiberglass crossarms when the extension arm is installed. The retrofit kit ensures the eye bolts do not penetrate the crossarm. Use the parts diagram to order parts as replacements or add-ons. Convert 15kV model to 34.5kV by adding insulators.

Fiberglass Ext Arm Labelled
Part No. Arm Diameter in (mm) Arm Length in (mm) Phase-to-Phase Rating Max. Vertical Load per Wireholder lb (kg) Weight lb (kg) Replacement Eye Bolt
ITP109892.5 (63.5)72 (1,828.8)15kV150 (68.04)21.2 (9.62)EBW09611
ITP104742.5 (63.5)72 (1,828.834.5kV150 (68.04)23.4 (10.61)EBW09611

A note about dimensions and tolerances

Item Part No. Description
1EBW09611Eye Bolt 5/8”-8 Acme Thread
2ITP10878Crossarm Support Assembly
3ITP09622Wireholder without Insulator
4ITP10466Wireholder with Insulator
6LAB12355Wire Holder Location Label
7LAB14264Weather Resistant Warning Tags
8ITP10925Optional Accessory: Fiberglass Crossarm Retrofit Kit

A note about dimensions and tolerances

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Our range is continually developing and expanding - plus we frequently undertake custom engineering design - so if you don’t see the exact product you need, please contact us with your exact requirements.

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