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Flagpole Top Adapter

Price range: $179.95 through $379.95

Seamlessly mount threaded revolving trucks to unthreaded flagpole tops.

The Flagpole Top Adapter is designed for flagpoles that do not feature a factory-installed 1 1/4″ female NPT threaded top plug. Tapped internally with a 1 1/4″ NPT female thread, this adapter slips directly over the top of your unthreaded pole and secures firmly with three stainless steel set screws—allowing you to mount 1 1/4″ NPT threaded trucks (such as Medium and Large double revolving trucks) quickly and safely. Available in pole top outer diameters ranging from 2 3/8″ up to 6″ in a clean silver aluminum finish.

  • Top Thread: 1 1/4″ NPT female thread (fits standard 1 1/4″ NPT truck spindles).
  • Sizes Available: 2 3/8″, 2.5″, 3″, 3.5″, 4″, 4.5″, 5″, 5.5″, and 6″ outer pole diameters.
  • Standard Finish: Silver aluminum (custom colours available upon request).
  • Securing Hardware: Includes three 1/4″-20NC stainless steel set screws.

Please Note: Product images are for illustrative purposes and may differ from the actual product.

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Description

Description

Convert Unthreaded Poles for NPT Threaded Trucks

Upgrading or replacing your flagpole truck should never require full pole replacement. If your flagpole top lacks an internal threaded plug, this heavy-duty adapter bridges the gap. Built to receive trucks with a 1 1/4″ NPT male spindle post (like our Medium and Large Double Revolving Trucks), it transforms a standard unthreaded pole top into a fully compatible, threaded receiver.

Precision Slip-On Fit & Simple Installation

Installing the adapter is straightforward and requires no complex metalworking or field-threading. The sleeve slides directly over the top outer diameter of your flagpole. Once positioned, simply tighten the three included 1/4″-20NC stainless steel set screws to lock the adapter permanently in place. The stainless steel hardware ensures maximum hold while resisting rust and seizure in harsh Canadian winter weather.

Extensive Size Range & Finish Options

To guarantee a precise, snug fit across a wide variety of residential, commercial, and architectural flagpoles, this adapter is stocked in nine precise top outer diameter sizes ranging from 2 3/8″ up to 6″.

  • Standard Finish: Supplied in clean, durable silver aluminum to match standard untreated or clear-anodized aluminum poles.
  • Special Request Colours: Custom colour-matched finishes (such as bronze, white, or black) are available by special request. Please contact our team prior to ordering if you require a custom finish.

Product Highlights:

  • Converts Unthreaded Poles: Accepts trucks with 1 1/4″ NPT threaded spindles.
  • Secure Set-Screw Locking: Includes three 1/4″-20NC stainless steel set screws for a tight, weather-resistant lock.
  • Wide Size Selection: Fits 9 standard pole top outer diameters from 2 3/8″ to 6″.
  • Corrosion-Resistant Build: Durable aluminum body and stainless steel hardware engineered for extreme outdoor conditions.
  • Custom Finishes Available: Ships in standard Silver; custom colours available by special request.

Specifications:

  • Product Type: Flagpole Top Adapter Sleeve
  • Internal Thread Tapping: 1 1/4″-11.5 NPT
  • Material: Heavy-duty Aluminum
  • Hardware Included: Three 1/4″-20NC Stainless Steel Set Screws
  • Available Sizes: 2 3/8″, 2.5″, 3″, 3.5″, 4″, 4.5″, 5″, 5.5″, 6″
  • Standard Colour: Silver (Other colours available by special request)
Product Data

Additional information

Weight N/A
Dimensions N/A
Diameter

2 3/8", 2.5", 3", 3.5", 4", 4.5", 5", 5.5", 6"

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