Smooth Bore to SM Thread Adapters

Secure SM05-, SM1-, and SM2-Threaded Components to Double-Bored Optics Mounts
Versions with Internal and External Threads

Ø1/2" Bore

Internal
SM05
Thread

SM05AB1

SM1AB1

Ø1" Bore

Internal
SM1
Thread

Ø2" Bore

External
SM2
Thread

SM2AB2

SM1AB2 Threaded onto a Matched
Achromatic Pair and Mounted
in Our KM100 Mount

Application Idea

Related Items

SM Thread to Double-Bore Adapters

Mounted Optics

Quick-Release Optic Mount

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Overview
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Item #	Qty	Description
SM2AB1	1	Ø2" Smooth Bore to Internal SM2 Thread Adapter
SM2L10	1	SM2 Lens Tube, 1" Thread Depth, One Retaining Ring Included
KM200	1	Kinematic Mirror Mount for Ø2" Optics
TR3	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
PH4	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 4"

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Item #	Qty	Description
SM2AB1	1	Ø2" Smooth Bore to Internal SM2 Thread Adapter
SM2L10	1	SM2 Lens Tube, 1" Thread Depth, One Retaining Ring Included
KM200	1	Kinematic Mirror Mount for Ø2" Optics
TR75/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
PH100/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=100 mm

SM2AB1 adapter threaded onto an SM2 lens tube, mounted on our KM200 kinematic mount.

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Item #	Qty	Description
SM05AB2	1	Ø1/2" Smooth Bore to External SM05 Thread Adapter
SM05L15	1	SM05 Lens Tube, 1.5" Thread Depth, One Retaining Ring Included
KM05	1	Kinematic Mirror Mount for Ø1/2" Optics, 8-32 Taps
TR2	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 2"
PH3	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 3"

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Item #	Qty	Description
SM05AB2	1	Ø1/2" Smooth Bore to External SM05 Thread Adapter
SM05L15	1	SM05 Lens Tube, 1.5" Thread Depth, One Retaining Ring Included
KM05/M	1	Kinematic Mirror Mount for Ø1/2" Optics, M4 Taps
TR50/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 50 mm
PH75/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=75 mm

SM05AB2 adapter threaded onto an SM05 lens tube, mounted on our KM05 kinematic mount.

Features

Integrate SM-Threaded Components into Our Double-Bored Optic Mounts
Available with Either Internal or External SM Threads

The adapters offered on this page are designed to enable SM05, SM1, or SM2 lens tube systems to be directly fitted into our standard double-bored Ø1/2", Ø1", or Ø2" mounts, respectively. These are ideal for forming a simple quick-release mount: by simply releasing the setscrew on the mount, a lens tube assembly can be easily removed and reinserted into any of our standard double-bored kinematic mounts.

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Ø1/2" Optic Mount to SM05 Threads

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Item #	Qty	Description
SM05AB1	1	Ø1/2" Smooth Bore to Internal SM05 Thread Adapter
SM05FC	1	FC/PC Fiber Adapter Plate with External SM05 (0.535"-40) Threads, Wide Key (2.2 mm)
KM05	1	Kinematic Mirror Mount for Ø1/2" Optics, 8-32 Taps
TR2	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 2"
PH3	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 3"

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Item #	Qty	Description
SM05AB1	1	Ø1/2" Smooth Bore to Internal SM05 Thread Adapter
SM05FC	1	FC/PC Fiber Adapter Plate with External SM05 (0.535"-40) Threads, Wide Key (2.2 mm)
KM05/M	1	Kinematic Mirror Mount for Ø1/2" Optics, M4 Taps
TR50/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 50 mm
PH75/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=75 mm

SM05AB1 threaded onto an SM05FC terminated fiber adapter, mounted on our KM05 kinematic mount.

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Provides Ø0.41" (10.3 mm) Clear Aperture
Fits Into KM05 or KM05/M Kinematic Mount
Compatible with All SM05 (0.535"-40) Threaded Components

The SM05AB1 and SM05AB2 are fixed adapters that allow SM05-threaded (0.535"-40) components to be mounted to our KM05 Ø1/2" optic mount (see images to the right) and other fixed Ø1/2" mirror mounts. These adapters are available with either internal SM05 threading (SM05AB1) or with external SM05 threading (SM05AB2). Both adapters maintain a maximum clear aperture while allowing the user to securely fasten an SM05-threaded component to our Ø1/2" kinematic mounts.

Ø1" Optic Mount to SM1 Threads

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Item #	Qty	Description
SM1AB1	1	Ø1" Smooth Bore to Internal SM1 Thread Adapter
KM100	1	Kinematic Mirror Mount for Ø1" Optics
SM1V10	1	Ø1" Adjustable Lens Tube, 0.81" Travel Range
TR3	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
PH4	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 4"

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Item #	Qty	Description
SM1AB1	1	Ø1" Smooth Bore to Internal SM1 Thread Adapter
KM100	1	Kinematic Mirror Mount for Ø1" Optics
SM1V10	1	Ø1" Adjustable Lens Tube, 0.81" Travel Range
TR75/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
PH100/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=100 mm

SM1AB1 threaded onto an SM1 adjustable-length lens tube with an achromatic lens, mounted on our KM100 kinematic mount.

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Provides Ø0.91" (23.0 mm) Clear Aperture
Fits Into KM100 Kinematic Mount
Compatible with All SM1 (1.035"-40) Threaded Components

The SM1AB1 and SM1AB2 are fixed adapters that allow SM1-threaded (1.035"-40) components to be mounted to our KM100 Ø1" optic mount (see images to the right) and other fixed Ø1" mirror mounts. These adapters are available with either internal SM1 threading (SM1AB1) or with external SM1 threading (SM1AB2). Both adapters maintain a maximum clear aperture while allowing the user to securely fasten an SM1-threaded component to our Ø1" kinematic mounts.

Ø2" Optic Mount to SM2 Threads

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Item #	Qty	Description
SM2AB2	1	Ø2" Smooth Bore to External SM2 Thread Adapter
SM2L03	1	SM2 Lens Tube, 0.3" Thread Depth, One Retaining Ring Included
KM200	1	Kinematic Mirror Mount for Ø2" Optics
TR3	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
PH4	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 4"

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Item #	Qty	Description
SM2AB2	1	Ø2" Smooth Bore to External SM2 Thread Adapter
SM2L03	1	SM2 Lens Tube, 0.3" Thread Depth, One Retaining Ring Included
KM200	1	Kinematic Mirror Mount for Ø2" Optics
TR75/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
PH100/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=100 mm

SM2AB2 threaded onto an SM2 lens tube with an economy beamsplitter mounted on our KM200 kinematic mount.

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Provides Ø1.90" (48.3 mm) Clear Aperture
Compatible with the KM200 Kinematic Mount and Other Ø2" Optic Mounts
Compatible with all SM2 (2.035"-40) Threaded Components

The SM2AB1 and SM2AB2 are fixed adapters that allow SM2-threaded (2.035"-40) components to be mounted to our KM200 Ø2" optic mount (see image to the right) and other Ø2" optic mounts. These adapters are available with either internal SM2 threading (SM2AB1) or with external SM2 threading (SM2AB2). Both adapters maintain a maximum clear aperture while allowing the user to securely fasten an SM2-threaded component to our Ø2" optic mounts.