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Fixed Lens Mounts


  • Fixed Mounts for Various Optic Diameters
  • 8-32 (M4) Tapped for Post Mounting
  • Stainless Steel Lens Adapters Available for Small Optics

LMR2

Shown with a
Plano-Convex Lens

LMR1S

SMR05

Shown with
a Ge Lens

LMRA10

LMRA5

LMR05

Shown with LMRA6 Adapter

Small Optic Adapters

Related Items


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Fixed Lens Mounts
Click to Enlarge

Fixed Lens Mounts Feature Internal Threads and a Retaining Lip (LMRx), Internal and External Threads (LMRxS), or Internal Threads (SMRx)

Click to Enlarge

LMR1 Ø1" Mount Attached to a TPA01 Kinematic Adapter

Features

  • Internally SM-Threaded Mounts for 13 Optic Diameters from Ø1/2" to Ø4"
  • Internally and Externally SM-Threaded Mounts for Combining Optics and SM-Threaded Components
  • Internally SM-Threaded Mounts without Retaining Lip
  • Adapters for Mounting Small Optics in SM-Threaded Lens Mounts
  • Drop-In Alignment Plates for Fast Beam Alignment
  • Retaining Rings for Securing Optics in Place
  • Spanner Wrenches for Safe and Easy Optic Placement

Fixed Lens Mounts with Internal Threads (LMRx Series)
Our standard fixed optic mounts (LMRx series) are available for 13 distinct optic diameters ranging from Ø1/2" to Ø4", feature internal SM threading, and come complete with one retaining ring for securing the optic in place. They feature an 8-32 (M4) tapped hole for mounting on Ø1/2" posts. Our most popular fixed optic mounts in this series, the LMR05(/M), LMR1(/M), and LMR2(/M), are available individually or in packs of 5 for ordering convenience. 

Fixed Lens Mounts
Click to Enlarge

LMRA Series Adapters for Mounting Small Optics 

Fixed Lens Mounts with Internal and External Threads (LMRxS Series)
Thorlabs also offers fixed mounts with both internal and external SM threading (LMRxS series), which are available for optic diameters of
Ø1/2", Ø1", and Ø2". These mounts are ideal for mounting an optic in combination with a lens tube or other externally
SM-threaded component. Each LMRxS series mount also features an 8-32 (M4) tapped hole for Ø1/2" post mounting and comes complete
with a compatible retaining ring.

Fixed Lens Mounts with No Retaining Lip (SMRx Series)
To mount multiple lens tubes or mounted optics, Thorlabs offers a line of internally SM-threaded mounts with no retaining lip (SMRx series). These mounts can also be used to hold unmounted optics when combined with two retaining rings (not included). Like the LMRx and LMRxS series, these mounts also feature an 8-32 (M4) tapped hole for mounting on Ø1/2" posts.

Small Optic Adapters
For small optics (i.e., Ø10 mm or less), we offer stainless steel adapters, as shown to the right, that allow optics with various diameters ranging from Ø5.0 mm to Ø9.0 mm to be mounted in our SM05-threaded mounts, and optics with a Ø10 mm diameter to be mounted in our SM18-threaded LMR18 mount. We also offer a line of small optic adapters with external SM1 threading, which can mount optics from Ø5 mm to Ø20 mm in SM1-threaded lens mounts.

This page also features alignment plates for simple beam alignment, SM-threaded retaining rings, and spanner wrenches for easy optic installation. 


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Posted Comments:
Poster:Tyler
Posted Date:2009-03-12 10:55:02.0
A response from Tyler at Thorlabs to stevenbearden: Thank you for telling us that we are on the right track to providing you the information you need to choose the correct products. If in the future you have any suggestions on how to further improve the presentation of the products or have additional input on a presentation feature that you like, please let us know.
Poster:stevenbearden
Posted Date:2009-03-11 19:09:18.0
Just a note to thank you for a wonderful website. I am helping a small company design an enclosure that will utilize some THORLAB hardware inside. I have never visited a site for dimensional information and found what I needed as fast and easy (and accurately!) as I did today on yours. Great job to those that did the work, and of course those that saw the need from within your company. I will promote the use of your products in future designs. Keep up the great work, we (out here) DO appreciate it! Sincerely, Steven Bearden

Fixed Lens Mounts with Internal Threads

LMR1 with ZnSe lens mounted in 1/2" postClick to Enlarge
LMR1 Mounted on a Ø1/2" Post and Attached to an Aluminum Breadboard
  • Accommodates Various Optic Diameters from Ø1/2" to Ø4"
  • Internally SM Threaded
  • 8-32 (M4) Tapped Hole Allows for Mounting to Ø1/2" Posts
  • Includes Compatible Retaining Ring
  • Ø1/2", Ø1", and Ø2" Optic Diameter Mounts Available in 5 Packs

These Fixed Optic Mounts are our standard mounts for 13 distinct optic diameters ranging from Ø1/2" to Ø4". Each mount features internal SM threading, and ships with one compatible SM-threaded retaining ring for securing the optic into place. The internal threading is deep enough to hold most unmounted optics, and is also just deep enough to allow for the mounting of lens tubes or other externally threaded SM components. The base of each mount features an 8-32 (M4) tapped hole, which allows for easy mounting to Ø1/2" Posts, as shown to the right. Additional retaining rings are sold separately below.

Three of our most popular fixed optic mounts, the LMR05(/M), LMR1(/M), and LMR2(/M), are available individually and in packs of 5. 5-packs include one retaining ring per mount for a total of five rings.

Item #Optic
Diameter
Max Optic
Thicknessa
Clear AperturebOptical HeightIncluded
Retaining Ring
Suggested
Spanner Wrench
LMR05(/M) Ø1/2"  0.21" (5 mm) Ø0.44" (Ø11.0 mm) 0.63" (16.0 mm) SM05RR SPW603
LMR15(/M) Ø15 mm 0.30" (7.7 mm) Ø0.50" (Ø12.7 mm) 0.70" (17.8 mm) SM15RR SPW801
LMR18(/M) Ø18 mm 0.29" (7.4 mm) Ø0.61" (Ø15.5 mm) 0.75" (19.1 mm) SM18RR SPW801
LMR20(/M) Ø20 mm 0.29" (7.4 mm) Ø0.68" (Ø17.3 mm) 0.82" (20.8 mm) SM20RR SPW801
LMR1(/M) Ø1" 0.28" (7.1 mm) Ø0.90" (Ø23.0 mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
LMR30(/M) Ø30 mm 0.28" (7.1 mm) Ø1.10" (Ø28.0 mm) 1.00" (25.4 mm) SM30RR SPW607
LMR1.5(/M) Ø1.5" 0.36" (9.1 mm) Ø1.40" (Ø35.6 mm) 1.13" (28.7 mm) SM1.5RR SPW801
LMR45(/M) Ø45 mm 0.36" (9.2 mm) Ø1.67" (Ø42.4 mm) 1.30" (33.0 mm) SM45RR SPW801
LMR2(/M) Ø2" 0.36" (9.1 mm) Ø1.90" (Ø48.5 mm) 1.35" (34.3 mm) SM2RR SPW604
LMR75(/M) Ø75 mm 0.30" (7.6 mm) Ø2.81" (Ø71.4 mm) 2.00" (50.8 mm) SM75RR SPW801
LMR3 (/M) Ø3" 0.36" (9.2 mm) Ø2.81" (Ø71.4 mm) 2.00" (50.8 mm) SM3RR SPW605
LMR100(/M) Ø100 mm 0.54" (13.7 mm) Ø3.80" (Ø96.4 mm) 3.00" (76.2 mm) SM100RR -
LMR4(/M) Ø4" 0.54" (13.7 mm) Ø3.81" (Ø96.8 mm) 3.00" (76.2 mm) SM4RR -
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
  • This specification refers to the clear aperture of the retaining ring used to mount the optic.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
LMR05 Support Documentation
LMR05Lens Mount with Retaining Ring for Ø1/2" Optics, 8-32 Tap
$15.02
Today
LMR05-P5 Support Documentation
LMR05-P5Lens Mount with Retaining Ring for Ø1/2" Optics, 8-32 Tap, 5 Pack
$71.35
Today
LMR15 Support Documentation
LMR15Lens Mount with Retaining Ring for Ø15 mm Optics, 8-32 Tap
$21.00
Today
LMR18 Support Documentation
LMR18Lens Mount with Retaining Ring for Ø18 mm Optics, 8-32 Tap
$23.10
Today
LMR20 Support Documentation
LMR20Lens Mount with Retaining Ring for Ø20 mm Optics, 8-32 Tap
$25.20
Today
LMR1 Support Documentation
LMR1Lens Mount with Retaining Ring for Ø1" Optics, 8-32 Tap
$15.23
Today
LMR1-P5 Support Documentation
LMR1-P5Lens Mount with Retaining Ring for Ø1" Optics, 8-32 Tap, 5 Pack
$72.30
Today
LMR30 Support Documentation
LMR30Lens Mount with Retaining Ring for Ø30 mm Optics, 8-32 Tap
$27.83
Today
LMR1.5 Support Documentation
LMR1.5Lens Mount with Retaining Ring for Ø1.5" Optics, 8-32 Tap
$23.52
Today
LMR45 Support Documentation
LMR45Lens Mount with Retaining Ring for Ø45 mm Optics, 8-32 Tap
$31.50
Today
LMR2 Support Documentation
LMR2Lens Mount with Retaining Ring for Ø2" Optics, 8-32 Tap
$24.68
Today
LMR2-P5 Support Documentation
LMR2-P5Lens Mount with Retaining Ring for Ø2" Optics, 8-32 Tap, 5 Pack
$117.20
Today
LMR75 Support Documentation
LMR75Lens Mount with Retaining Ring for Ø75 mm Optics, 8-32 Tap
$51.45
Today
LMR3 Support Documentation
LMR3Customer Inspired!Lens Mount with Retaining Ring for Ø3" Optics, 8-32 Tap
$51.45
Today
LMR100 Support Documentation
LMR100Lens Mount with Retaining Ring for Ø100 mm Optics, 8-32 Tap
$63.00
Today
LMR4 Support Documentation
LMR4Customer Inspired!Lens Mount with Retaining Ring for Ø4" Optics, 8-32 Tap
$63.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LMR05/M Support Documentation
LMR05/MLens Mount with Retaining Ring for Ø1/2" Optics, M4 Tap
$15.02
Today
LMR05/M-P5 Support Documentation
LMR05/M-P5Lens Mount with Retaining Ring for Ø1/2" Optics, M4 Tap, 5 Pack
$71.35
Today
LMR15/M Support Documentation
LMR15/MLens Mount with Retaining Ring for Ø15 mm Optics, M4 Tap
$21.00
Today
LMR18/M Support Documentation
LMR18/MLens Mount with Retaining Ring for Ø18 mm Optics, M4 Tap
$23.10
Today
LMR20/M Support Documentation
LMR20/MLens Mount with Retaining Ring for Ø20 mm Optics, M4 Tap
$25.20
Today
LMR1/M Support Documentation
LMR1/MLens Mount with Retaining Ring for Ø1" Optics, M4 Tap
$15.23
Today
LMR1/M-P5 Support Documentation
LMR1/M-P5Lens Mount with Retaining Ring for Ø1" Optics, M4 Tap, 5 Pack
$72.30
Today
LMR30/M Support Documentation
LMR30/MLens Mount with Retaining Ring for Ø30 mm Optics, M4 Tap
$27.83
Today
LMR1.5/M Support Documentation
LMR1.5/MLens Mount with Retaining Ring for Ø1.5" Optics, M4 Tap
$23.52
Today
LMR45/M Support Documentation
LMR45/MLens Mount with Retaining Ring for Ø45 mm Optics, M4 Tap
$31.50
Today
LMR2/M Support Documentation
LMR2/MLens Mount with Retaining Ring for Ø2" Optics, M4 Tap
$24.68
Today
LMR2/M-P5 Support Documentation
LMR2/M-P5Lens Mount with Retaining Ring for Ø2" Optics, M4 Tap, 5 Pack
$117.20
Today
LMR75/M Support Documentation
LMR75/MLens Mount with Retaining Ring for Ø75 mm Optics, M4 Tap
$51.45
Today
LMR3/M Support Documentation
LMR3/MCustomer Inspired!Lens Mount with Retaining Ring for Ø3" Optics, M4 Tap
$51.45
Today
LMR100/M Support Documentation
LMR100/MLens Mount with Retaining Ring for Ø100 mm Optics, M4 Tap
$63.00
Today
LMR4/M Support Documentation
LMR4/MCustomer Inspired!Lens Mount with Retaining Ring for Ø4" Optics, M4 Tap
$63.00
Today

Fixed Lens Mounts with Internal and External Threading

LMR1S Application Image
SM1D12C Iris Shown with an SM1L10 Lens Tube that Has Been Mounted to an LMR1S Mount
  • Fixed Mounts for Ø1/2", Ø1", and Ø2" Optics
  • Internal and External SM05, SM1, or SM2 Threads
  • 8-32 (M4) Tapped Hole for Mounting to Ø1/2" Posts
  • Mount Lenses with Included SM-Threaded Retaining Ring
  • Add or Remove SM-Threaded Components without Losing Access to the Mounted Optic

These fixed lens mounts, which feature internal SM threading on one side and external SM threading on the other, are available for Ø1/2", Ø1", and Ø2" optics. The optic is secured in the mount with the included retaining ring and can be post mounted to a Ø1/2" Post.

The internal threading is deep enough to hold most unmounted optics, while the external threading is just deep enough to allow for the mounting of lens tubes, irises, or other internally threaded SM components (see picture to the right). Although the functionality of this part can be duplicated by combining a lens tube slip ring and a lens tube, these fixed mounts offer a smaller package size.

Item #Optic DiameterMax Optic
Thicknessa
Clear AperturebOptical HeightIncluded
Retaining Ring
Suggested
Spanner Wrench
LMR05S(/M) Ø1/2" 0.21" (5 mm) Ø0.43" (Ø10.9 mm) 0.63" (16.0 mm) SM05RR SPW603
LMR1S(/M) Ø1" 0.28" (7.1 mm) Ø0.90" (Ø23.0 mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
LMR2S(/M) Ø2" 0.36" (9.1 mm) Ø1.90" (Ø48.5 mm) 1.36" (34.5 mm) SM2RR SPW604
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
  • This specification refers to the clear aperture of the retaining ring used to mount the optic.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
LMR05S Support Documentation
LMR05SØ1/2" Lens Mount with Internal and External SM05 Threads, 8-32 Tap
$24.15
Today
LMR1S Support Documentation
LMR1SCustomer Inspired!Ø1" Lens Mount with Internal and External SM1 Threads, 8-32 Tap
$26.25
Today
LMR2S Support Documentation
LMR2SØ2" Lens Mount with Internal and External SM2 Threads, 8-32 Tap
$30.45
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LMR05S/M Support Documentation
LMR05S/MØ1/2" Lens Mount with Internal and External SM05 Threads, M4 Tap
$24.15
Today
LMR1S/M Support Documentation
LMR1S/MCustomer Inspired!Ø1" Lens Mount with Internal and External SM1 Threads, M4 Tap
$26.25
Today
LMR2S/M Support Documentation
LMR2S/MØ2" Lens Mount with Internal and External SM2 Threads, M4 Tap
$30.45
Today

Fixed Lens Mounts with No Retaining Lip

  • Fixed Mounts for Ø1/2", Ø1", and Ø2" Optics
  • Internal SM05, SM1, or SM2 Threads
  • 8-32 (M4) Tapped Hole for Mounting to Ø1/2" Posts
  • Mount Optics Using Two Retaining Rings (Sold Separately)
  • Mount Externally SM-Threaded Components on Either Side

These mounting rings feature internal SM05, SM1, or SM2 threading that extends the full length of the mount without any retaining lip. They are perfect for mounting lens tubes and other mounted optics, and can also be used to hold unmounted optics when used with two retaining rings (sold separately below).

Item #Optic
Diameter
Max Optic
Thicknessa
Clear AperturebOptical HeightCompatible Retaining
Ring (Not Included)
Suggested
Spanner Wrench
SMR05(/M) Ø1/2" 0.16" (4 mm) Ø0.51" (Ø13.0 mm) 0.63" (16.0 mm) SM05RR SPW603
SMR1(/M) Ø1" 0.24" (6.1 mm) Ø1.01" (Ø25.6 mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
SMR2(/M) Ø2" 0.30" (7.6 mm) Ø2.01" (Ø51.0 mm) 1.35" (34.0 mm) SM2RR SPW604
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
  • This specification is the clear aperture of the mount without a retaining ring.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SMR05 Support Documentation
SMR05Ø1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, 8-32 Tap
$16.80
Today
SMR1 Support Documentation
SMR1Ø1" Lens Mount with SM1 Internal Threads and No Retaining Lip, 8-32 Tap
$17.85
Today
SMR2 Support Documentation
SMR2Ø2" Lens Mount with SM2 Internal Threads and No Retaining Lip, 8-32 Tap
$25.20
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
SMR05/M Support Documentation
SMR05/MØ1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, M4 Tap
$16.80
Today
SMR1/M Support Documentation
SMR1/MØ1" Lens Mount with SM1 Internal Threads and No Retaining Lip, M4 Tap
$17.85
Today
SMR2/M Support Documentation
SMR2/MØ2" Lens Mount with SM2 Internal Threads and No Retaining Lip, M4 Tap
$25.20
Today

LMR Small Optic Adapters

Lens Mounted App Shot

LA1116 Lens Epoxied into an LMRA6 Adapter Using NOA61 Epoxy; the Mounted Lens Was Then Placed in the LMR05 Mount
  • Adapt Optics Ranging from Ø5 mm to Ø9 mm to Fit into SM05-Compatible Components
  • Adapt Ø10 mm Optics to Fit into an LMR18(/M) Fixed Lens Mount
  • Manufactured from Stainless Steel
  • Lenses are Held in Adapter Ring with Epoxy using the Epoxy Reservoirs

Our Optic Adapters are designed to mount optics from Ø5 mm to Ø10 mm. Our adapters for Ø5 mm to Ø9 mm fit into SM05-compatible components, while our LMRA10 Adapter for Ø10 mm optics fits into the LMR18(/M) lens mount.

Each optic adapter is designed to allow the lens to be epoxied into place (NOA61 epoxy recommended); simply place a drop or two of epoxy into each of the epoxy reservoirs in the adapter. Once the optic is secured in the adapter, the new assembly can be held in our LMR05 (LMR18 for LMRA10) mount, as well as other SM05 (SM18) threaded components.

Thorlabs also offers an extensive line of adapters for unmounted optics which allow optics ranging from Ø5 mm to Ø2" to be mounted in our fixed optic mounts. 

Item #Optic DiameterClear ApertureOuter DiameterThicknessCompatible
Mounts
Typ.Max
LMRA5 Ø5 mm Ø5.05 mm Ø3.81 mm (Ø0.150") Ø12.7 mm (Ø1/2") 2.16 mm (0.085") LMR05 Lens Mount

SM05 Lens Tubes

 16 mm Cage Components

LMRA6 Ø6 mm Ø6.07 mm Ø4.82 mm (Ø0.190")
LMRA6.35 Ø6.35 mm Ø6.4 mm Ø5.38 mm (Ø0.212")
LMRA7 Ø7 mm Ø7.03 mm Ø6.04 mm (Ø0.238")
LMRA7.4 Ø7.4 mm Ø7.41 mm Ø6.35 mm (Ø0.250")
LMRA8 Ø8 mm Ø8.02 mm Ø6.98 mm (Ø0.275")
LMRA9 Ø9 mm Ø9.01 mm Ø7.87 mm (Ø0.310")
LMRA10 Ø10 mm Ø10.03 mm Ø8.76 mm (Ø0.345") Ø18 mm (Ø0.71") 2.54 mm (0.100") LMR18 Lens Mount
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LMRA5 Support Documentation
LMRA5LMR05 Adapter for Ø5 mm Optics
$15.00
Today
LMRA6 Support Documentation
LMRA6LMR05 Adapter for Ø6 mm Optics
$15.00
Today
LMRA6.35 Support Documentation
LMRA6.35LMR05 Adapter for Ø6.35 mm Optics
$15.00
Today
LMRA7 Support Documentation
LMRA7LMR05 Adapter for Ø7.0 mm Optics
$13.80
Today
LMRA7.4 Support Documentation
LMRA7.4LMR05 Adapter for Ø7.4 mm Optics
$13.80
Today
LMRA8 Support Documentation
LMRA8LMR05 Adapter for Ø8.0 mm Optics
$15.00
Today
LMRA9 Support Documentation
LMRA9LMR05 Adapter for Ø9.0 mm Optics
$15.00
Today
LMRA10 Support Documentation
LMRA10LMR18 Adapter for Ø10.0 mm Optics
$20.00
Today

Lens Mount Alignment Plates

Lense Mount Alignment Plate Application
  • Quick, Drop-In Visual Beam Alignment Tool
  • Ø1 mm Through Hole
  • Options for Ø1" or Ø2" Fixed Optics Mounts and SM1 or SM2 Series Lens Tubes

These alignment targets can be quickly and easily dropped onto one of our fixed lens holders or lens tubes allowing the user to align a visible beam using the center Ø1 mm through hole. Once the beam is aligned, the tool can be lifted from the lens holder or lens tube without disturbing the alignment and can later be replaced into approximately the same position.

For optimal visual alignment of the beam, both plates feature laser-engraved concentric circles, with the diameter of each circle being 2 mm greater than the previous. The LMR1AP Alignment Plate has eight of these concentric circles and fits Ø1" fixed optic mounts and lens tubes, while the LMR2AP Alignment Plate has twelve concentric circles and fits Ø2" fixed optic mounts and lens tubes.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LMR1AP Support Documentation
LMR1APCustomer Inspired!Alignment Plate for Ø1" Fixed Optic Mounts
$23.10
Today
LMR2AP Support Documentation
LMR2APCustomer Inspired!Alignment Plate for Ø2" Fixed Optic Mounts
$27.30
Today

SM Series Retaining Rings for Fixed Lens Mounts

  • SM-Threaded Rings for Securing Optics into Place
  • Made from Black Anodized Aluminum
  • SM05, SM1, and SM2 Threaded Rings Available in Multipacks

These Retaining Rings are replacements for those that are provided with our fixed lens mounts featured above. We also offer stress-free and plastic retaining rings for our Ø1.0" lens mounts, and retaining rings in additional sizes on our main SM-Threaded Retaining Rings page. These rings are also compatible with SM-threaded lens tubes and other SM-threaded components.

For ordering convenience, our Ø1/2" and Ø1" Retaining Rings, the SM05RR and SM1RR, are available in packs of 10, and our Ø2" Retaining Ring, the SM2RR, is available in packs of 5. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
SM05RR Support Documentation
SM05RRSM05 Retaining Ring for Ø1/2" Lens Tubes and Mounts
$4.00
Today
SM05RR-P10 Support Documentation
SM05RR-P10SM05 Retaining Ring for Ø1/2" Lens Tubes and Mounts, 10 Pack
$36.00
Today
SM15RR Support Documentation
SM15RRSM15 Retaining Ring for Ø15 mm Lens Mounts
$9.50
Today
SM18RR Support Documentation
SM18RRSM18 Retaining Ring for Ø18 mm Lens Mounts
$9.50
Today
SM20RR Support Documentation
SM20RRSM20 Retaining Ring for Ø20 mm Lens Mounts
$9.50
Today
SM1RR Support Documentation
SM1RRSM1 Retaining Ring for Ø1" Lens Tubes and Mounts
$4.50
Today
SM1RR-P10 Support Documentation
SM1RR-P10SM1 Retaining Ring for Ø1" Lens Tubes and Mounts, 10 Pack
$40.50
Today
SM30RR Support Documentation
SM30RRSM30 Retaining Ring for Ø30 mm Lens Mounts
$11.00
Today
SM1.5RR Support Documentation
SM1.5RRSM1.5 Retaining Ring for Ø1.5" Lens Mounts
$9.50
Today
SM45RR Support Documentation
SM45RRSM45 Retaining Ring for Ø45 mm Lens Mounts
$12.20
Today
SM2RR Support Documentation
SM2RRSM2 Retaining Ring for Ø2" Lens Tubes and Mounts
$6.75
Today
SM2RR-P5 Support Documentation
SM2RR-P5SM2 Retaining Ring for Ø2" Lens Tubes and Mounts, 5 Pack
$30.38
Today
SM75RR Support Documentation
SM75RRSM75 Retaining Ring for Ø75 mm Mounts
$14.30
Today
SM3RR Support Documentation
SM3RRSM3 Retaining Ring for Ø3" Lens Tubes and Mounts
$14.30
Today
SM100RR Support Documentation
SM100RRSM100 Retaining Ring for Ø100 mm Mounts
$16.60
Today
SM4RR Support Documentation
SM4RRCustomer Inspired!SM4 Retaining Ring for Ø4" Mounts
$16.60
Today

Spanner Wrenches for SM Series Retaining Rings

CT101 Application
Click to Enlarge

The SPW603 Spanner Wrench for SM05 Lens Tubes Interconnects to Reach the Retaining Rings in Long Lens Tubes
Spanner Wrench Application
Click to Enlarge

Spanner Wrench Usage
  • SPW603: For SM05RR Retaining Rings (Length = 1")
  • SPW606: For SM1RR Retaining Rings (Length = 1")
  • SPW602: For SM1RR Retaining Rings (Length = 3.88", Graduated)
  • SPW607: For SM30RR Retaining Rings (Length = 4.35")
  • SPW604: For SM2RR Retaining Rings (Length = 4.35")
  • SPW605: For SM3RR Retaining Rings (Length = 4.35")

The hollow construction of these spanner wrenches allows SM-series retaining rings to be installed or adjusted without obscuring the beam path. They include guide flanges that prevent most optical surfaces from being scratched while the wrench is being inserted, and knurled handles that provide improved grip.

As shown to the right, the SPW602 additionally features an engraved depth scale with imperial and metric increments (0.02" and 0.5 mm, respectively), thereby enabling precise positioning of optics.

For retaining rings not covered by our standard spanner wrenches, please see the SPW801 Adjustable Spanner Wrench sold at the bottom of the page. The long blades on the SPW801 also prevent scratches caused by the guide flanges on lenses with high curvature.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
SPW603 Support Documentation
SPW603SM05 Spanner Wrench, Length = 1"
$24.00
Today
SPW606 Support Documentation
SPW606Customer Inspired!SM1 Spanner Wrench, Length = 1"
$26.00
Today
SPW602 Support Documentation
SPW602SM1 Spanner Wrench, Graduated, Length = 3.88"
$26.00
Today
SPW607 Support Documentation
SPW607Customer Inspired!SM30 Spanner Wrench, Length = 4.35"
$40.00
Today
SPW604 Support Documentation
SPW604Customer Inspired!SM2 Spanner Wrench, Length = 4.35"
$43.40
Today
SPW605 Support Documentation
SPW605SM3 Spanner Wrench, Length = 4.35"
$76.50
Today

Adjustable Spanner Wrench

  • Diameter Range from 0.12" to 2.89" (3.0 mm to 73.4 mm)
  • Self-Centering, One-Handed Diameter Adjustment Mechanism
  • Replaceable Stainless Steel Blades

Thorlabs' Adjustable Spanner Wrench features a spanning range that is continuously adjustable from 0.12" to 2.89" (3.0 mm to 73.4 mm). It is capable of providing an exact fit for SM-series retaining rings as large as the SM3RR for Ø3" Lens Tubes and Mounts. The diameter spanned by the blades remains centered while the knurled knob is adjusted.

The reversible blades have a flat tip on one end intended for use with retaining rings, and an edge-offset fine point on the opposing end for adapters with holes. The blades extend 1.6" (40.7 mm) from the body of the wrench, helping to avoid scratching of short-focal-length lenses caused by the guide flanges on our standard spanner wrenches. To reverse the blades, a 0.050" (1.3 mm) balldriver or hex key is needed. Replacement blade pairs are available separately.

The SPW801 wrench withstands a maximum torque of 80 inch-pounds (9 N·m).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
SPW801 Support Documentation
SPW801Adjustable Spanner Wrench
$95.90
Today
SPW102 Support Documentation
SPW102Adjustable Spanner Wrench, Replacement Blade Set
$27.90
Today
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