SM05 Compatible Fixed Mounts


SM05-Compatible Fixed Mounts

  • 0.535"-40 Threading
  • Mount SM05 Lens Tubes
  • Mount Ø1/2" (Ø12.7mm) Optics


  • SM05 Threaded (0.535"-40) Fixed Mounts
  • Integrate SM Threaded Components; such as Lens Tubes, Irises and Adapters
  • Wide Range of Mounts Available

These SM05 (0.535"-40) threaded mounts allow a variety of optical components to be integrated into optomechanical setups. The majority of these mounts are post mountable via an #8-32 (M4) tapped hole; the HCS020 Flexure Stage Mount allows SM Threaded components to be mounted on a flexure stage system. All of these fixed mounts allow for versatility and flexibility in optomechanical constructions due to compatibility with SM05 Threaded lens tubes, irises and adapters .

This page contains our SM05 Compatible Fixed Mounts; for a full selection of available fixed mounts, please visit our Fixed Optic Mount navigation menu.


Fixed Lens Mount



  • Ø1/2" (Ø12.7 mm) Optics Held with SM05RR Retaining Ring
  • Mounts Optics up to 0.21" (5 mm) Thick
  • SM05RR Retaining Ring Removable with SPW603 Spanner Wrench

The LMR05 fixed optic mount is a convenient way to mount Ø1/2" optics on TR Series posts via the #8-32 (M4) tapped hole on the base of the mount. The retaining ring included with each mount secures the optic in place. Additional SM05LTRR retaining rings for stress free mounting of optics can be purchased separately.


Lens Mount with Internal and External SM05 Threads



  • Internally Threaded to Hold Optics up to 0.21" (5 mm) Thick
  • Externally Threaded to Integrate Lens Tubes, Irises or Other SM05 Internally Threaded Components
  • Post Mountable via #8-32 (M4) Tapped Hole

These fixed lens mounts are internally SM threaded on one side and externally SM threaded on the other (see picture at right) with an #8-32 (M4) tapped mounting hole. The optic is secured in the mount with the included retaining ring. This mount functions as a lens tube that can be directly attached to a TR Series Post. The internal threading can hold unmounted optics up to 0.21" (5 mm) thick, while the external threading is just deep enough to allow for the mounting of lens tubes, irises, or other internally threaded SM components. The functionality of this part can be duplicated by combining two other Thorlabs parts: a lens tube slip ring and a lens tube.


ؽ" Lens Tube Post Mounts


  • Internally SM05 Threaded
  • Post Mountable via #8-32 (M4) Tap

This mount allows an SM05 threaded lens tube to be mounted to a standard TR series post via an #8-32 (M4) tap on the bottom of the mount. The SMR05 (SMR05/M) has is internally SM05 (0.535"-40) threaded, allowing externally SM05 threaded components to be attached to either side.


SM05 Threaded Flexure Stage Mount

  • Internal SM05 Threading
  • Compatible with SM05 Accessories
  • Mounts to Flexure Stage

This mount is internally SM05 (0.535"-40) threaded to integrate our line of SM05 threaded accessories with any Thorlabs flexure stage systems. This mount is ideal for use with SM05 lens tubes to minimize stray light; other applications include use with the SM05PM5 linear polarizer holder in order to align a PM fiber to a connector keyway. The optical axis of the mount is 0.5" (12.5 mm) above the flexure stage.


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