M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP 30 mm CN

M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm

30 mm / CN
$17.29 $20.45
Skip to product information
M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP 30 mm CN
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP 30 mm CN
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP 30 mm CN
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP
  • M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm Telescope Extension Tube HIP
M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm

M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm

$17.29 $20.45
Colour
Ships FromCN

M54 x 0.75 Threaded Extension Tube – Aluminum Spacer for Telescope & Imaging Trains

Fine-tune your telescope or imaging train with this precision-machined M54 x 0.75 threaded extension tube. Available in eight thickness options — 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, and 30mm — this compact aluminum spacer lets you dial in the exact back-focus distance your optical setup demands. Made in Mainland China.

Key Features

  • M54 x 0.75 Male & Female Threads: Both ends feature matching M54 x 0.75mm threads, forming a clean, secure connection that keeps all components perfectly aligned within your imaging or telescope train.
  • Precise Spacing Control: Choose from eight thickness options (3mm–30mm) to achieve the exact back-focus or spacer distance required — no guesswork, no compromise.
  • Anodized Aluminum Construction: A lightweight yet durable aluminum body with a matte black interior texture helps minimize internal reflections along the optical path for cleaner results.
  • Compact Profile: Outer diameter of approx. 5.65 cm (2.22 inches) integrates seamlessly into standard imaging rigs and telescope focuser trains.
  • Single Piece per Option: Each order includes one extension tube in your chosen thickness, making it easy to build the exact spacing stack your setup needs.

Specifications

Material Anodized Aluminum
Thread (Internal & External) M54 x 0.75mm
Outer Diameter Approx. 5.65 cm / 2.22 in
Available Thicknesses 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, 30mm
Finish Matte black interior
Quantity 1 Piece
Country of Origin Made in Mainland China

What's in the Box

  • 1 × M54 x 0.75 Extension Tube (thickness of your choice)

Notes

  • Please allow ±1–2 mm measurement tolerance due to manual measurement.
  • Monitor color settings may cause slight variation from the actual product color.

Related Products You May Like

Learn more: OSHA on personal protective equipment

Frequently Asked Questions

Q: What thread standard does this extension tube use?

A: This extension tube features M54 x 0.75mm male and female threads on both ends, making it compatible with telescopes, camera imaging trains, and accessories that share the M54 x 0.75 thread standard.

Q: Can I stack multiple extension tubes together?

A: Yes. Because both ends carry matching M54 x 0.75mm threads, multiple tubes can be threaded together to achieve any custom back-focus distance your optical configuration requires.

Q: Why does the interior have a matte finish?

A: The matte black interior texture is designed to reduce stray light reflections along the optical path, helping maintain image contrast and clarity in your imaging or telescope setup.

Q: How many extension tubes are included per order?

A: Each order includes one (1) extension tube in the thickness you select at checkout. If you need multiple spacer lengths, simply order each thickness separately.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

You may also like