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C, S, and T-Mount Extensions Tubes

Used for Adding a Fixed Tube Extension to Optical Systems
Feature Male/Female Threads at Opposite Ends
Black Anodized Aluminum Construction

TECHSPEC® C, S, and T-Mount Extension Tubes add extension length to an optical system while blocking external light and debris from entering the system. Extension tubes are available with C, S, or T-Mount threading, allowing them to be integrated into a wide range of systems and applications. Their black anodized aluminum construction, combined with a threaded inner diameter, ensures that stray light is reduced within the system. TECHSPEC C, S, and T-Mount Extension Tubes feature different lengths that can be combined to create the exact extension length needed for a specific application. The actual tube length is longer than the extension length due to the male threaded portion.

Common Specifications

Function:

Extension Tube (Fixed)

Products

Thread Type	Extension Length (mm)	Stock Number	Price	Buy
C-Mount S-Mount T-Mount	10.0 100.0 111.5 15.0 20.0 25.0 40.0 5.0 50.0		20.82 21.68 24.65 25.71 28.26 34.00 40.59 45.90 48.02 74.38
T-Mount T-Mount	100.0 100.0	#65-969	74.38 £74.38 Qty 5+ £66.05 Request Quote	3-4 days ×
T-Mount T-Mount	100.0 100.0	#52-296	48.02 £48.02 Qty 5+ £42.84 Request Quote	3-4 days ×
T-Mount T-Mount	50.0 50.0	#58-735	45.90 £45.90 Qty 5+ £40.80 Request Quote	3-4 days ×
T-Mount T-Mount	25.0 25.0	#52-295	34.00 £34.00 Qty 5+ £30.35 Request Quote	3-4 days ×
T-Mount T-Mount	20.0 20.0	#53-231	34.00 £34.00 Qty 5+ £30.35 Request Quote	In Stock ×
T-Mount T-Mount	10.0 10.0	#52-294	25.71 £25.71 Qty 5+ £23.20 Request Quote	In Stock ×
S-Mount S-Mount	25.0 25.0	#63-958	24.65 £24.65 Qty 5+ £22.10 Request Quote	3-4 days ×
S-Mount S-Mount	15.0 15.0	#63-957	21.68 £21.68 Qty 5+ £19.29 Request Quote	3-4 days ×
S-Mount S-Mount	10.0 10.0	#63-956	20.82 £20.82 Qty 5+ £18.61 Request Quote	3-4 days ×
S-Mount S-Mount	5.0 5.0	#63-955	20.82 £20.82 Qty 5+ £18.61 Request Quote	3-4 days ×
C-Mount C-Mount	111.5 111.5	#53-838	74.38 £74.38 Qty 5+ £66.05 Request Quote	In Stock ×
C-Mount C-Mount	100.0 100.0	#54-633	74.38 £74.38 Qty 5+ £66.05 Request Quote	Contact Us ×
C-Mount C-Mount	50.0 50.0	#54-632	45.90 £45.90 Qty 5+ £40.80 Request Quote	In Stock ×
C-Mount C-Mount	40.0 40.0	#54-631	40.59 £40.59 Qty 5+ £35.95 Request Quote	In Stock ×
C-Mount C-Mount	25.0 25.0	#58-736	34.00 £34.00 Qty 5+ £30.35 Request Quote	In Stock ×
C-Mount C-Mount	15.0 15.0	#54-630	28.26 £28.26 Qty 5+ £25.16 Request Quote	In Stock ×
C-Mount C-Mount	10.0 10.0	#54-629	25.71 £25.71 Qty 5+ £23.20 Request Quote	In Stock ×
C-Mount C-Mount	5.0 5.0	#54-628	25.71 £25.71 Qty 5+ £23.20 Request Quote	In Stock ×

Accessories

Note: Compatible accessories for individual stock numbers may vary. If unsure about which accessories work with your products, please contact us here.

Title	Stock Number	Price	Buy

Mounting Clamp,1.75" Centerline, 30mm ID	#56-870	140.25 £140.25 Request Quote	3-4 days ×
S-Mount Extension Tube Kit	#68-226	160.65 £160.65 Qty 5+ £142.21 Request Quote	3-4 days ×
S-Mount Retainer Ring	#63-969	14.03 £14.03 Qty 5+ £12.49 Request Quote	3-4 days ×
C-Mount Retainer Ring	#58-740	14.88 £14.88 Qty 5+ £13.34 Request Quote	3-4 days ×
C-Mount Extension Tube Kit	#54-668	283.05 £283.05 Qty 5+ £249.64 Request Quote	3-4 days ×
T-Mount Retainer Ring	#58-741	14.88 £14.88 Qty 5+ £13.34 Request Quote	3-4 days ×

Related Products

C, S, and T-Mount Components

Acktar Hexa-Black™ C-Mount Noise Reduction Extension Tubes

C, S, and T-Mount Brass Spacer Rings

C, S, and T-Mount Fine Thread Focus Tubes

Resources

Filter

A Closer Look at Kinematic Movement

A Kinematic mount is classified by all degrees of freedom being fully constrained. Need a mount? Browse through the different variations at Edmund Optics.

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E-Series Kinematic Optical Mirror Mounts

E-Series Kinematic Optical Mounts provide high value and essential features for applications including lab use, prototyping, and system integration

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TECHSPEC® 90° Kinematic Adapter

Edmund Optics presents a demonstration of the TECHSPEC® 90° Kinematic Adapter (#34-248).

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Important Concepts for Selecting Optical Component Mounts

Edmund Optics offers a variety of kinematic, bar-type, translating, ring, and modular mounting components.

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How do truncated optics eliminate the need for kinematic mounts?

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Gimbal

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Optomechanical Thread Adapters

Thread adapters are used when connecting two components of different thread types. Learn more at Edmund Optics.

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Large Diameter Gimbal Optical Mounts

Large Diameter Gimbal Optical Mounts available from Edmund Optics are used to integrate large precision optical components, such as mirrors, into OEM and benchtop systems.

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Interchangeable Optical Mount and Side Access Mounting Plate

This is a quick video demonstration of integrating an optical cage system interchangeable optical mount and side access mounting plate using #85-717 and #85-641.

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How do I mount a mirror to a mirror mount that doesn't have a clamp or retainer ring?

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I’m using an English breadboard but will be switching to Metric soon, is there a way to adapt your TECHSPEC® Kinematic Mounts to both standards of posts and breadboard accessories?

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Could you tell me what the inner diameter of a ring mount mean? Does it mean the smallest diameter of the cylindrical components I can mount, or the biggest diameter?

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Bolt Circle (BC)

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Rapid Optical Prototyping

Quickly Respond to Collapsing Product Lifecycles

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Now that I have chosen my lens, how do I mount it?

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Do you have mounts for square or rectangular optics?

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What is the difference between pitch, roll, and yaw?

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Bezel

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Épaisseur de bord

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Moment Load

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Normal Load Capacity

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Roll

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Yaw

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C-Mount

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Do you have a simple prototyping assembly for an imaging system?

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C, S, and T-Mount Extensions Tubes

Common Specifications

Products

Accessories

Related Products

Resources

A Closer Look at Kinematic Movement

E-Series Kinematic Optical Mirror Mounts

TECHSPEC® 90° Kinematic Adapter

Important Concepts for Selecting Optical Component Mounts

How do truncated optics eliminate the need for kinematic mounts?

Gimbal

Optomechanical Thread Adapters

Large Diameter Gimbal Optical Mounts

Interchangeable Optical Mount and Side Access Mounting Plate

How do I mount a mirror to a mirror mount that doesn't have a clamp or retainer ring?

I’m using an English breadboard but will be switching to Metric soon, is there a way to adapt your TECHSPEC&reg; Kinematic Mounts to both standards of posts and breadboard accessories?

Could you tell me what the inner diameter of a ring mount mean? Does it mean the smallest diameter of the cylindrical components I can mount, or the biggest diameter?

Bolt Circle (BC)

Rapid Optical Prototyping

Now that I have chosen my lens, how do I mount it?

Do you have mounts for square or rectangular optics?

What is the difference between pitch, roll, and yaw?

Bezel

Épaisseur de bord

Moment Load

Normal Load Capacity

Roll

Yaw

C-Mount

Do you have a simple prototyping assembly for an imaging system?

I’m using an English breadboard but will be switching to Metric soon, is there a way to adapt your TECHSPEC® Kinematic Mounts to both standards of posts and breadboard accessories?