Option 1: Purchase Your Adapter Using the Tables Below

Webpage Features:
	Clicking this icon below will open a window that contains a detailed description and ordering information for the corresponding adapter.

The following tables outline the optical component thread adapters currently offered by Thorlabs. Click on this icon in the tables below to view details and purchase the adapter with the corresponding threads. Alternatively, you can view our adapters with SM05, RMS, M25 x 0.75, C-Mount, SM1, M32 x 0.75, SM1.5, SM2, M52 x 0.75, or SM3 threads by clicking on the boxes below (Option 2). We have a number of other threaded adapters that can be found on our General Adapters Guide. If you do not see an adapter or combination of adapters appropriate for your application, or to give feedback on our adapters selection guide tool, please contact techsupport@thorlabs.com.

Internal to External Adapters

INTERNAL THREAD

SM05 -                                               RMS -   SM1A4, SM1A4TS, or SM1BC a                               M25 x 0.75   -     a                                   C-Mount   b   SM1A9 or SM1A9TS                                   M25.5 x 0.5         -                                       SM1 SM1A6 or SM1A6T or SM1A6FW SM1A3 or SM1A3TS SM1A10, SM1A10TS, SM1A10A, DC-CS1, or SM1A10Z - a SM1A16 or SM1A70             W26 x 0.706   a a     a -                                     M27 x 0.5             -                                   M27 x 0.75             -                                 M27 x 1.0             -                                SM30                   -                           M30 x 1.0                                             M32 x 0.75   RMSA9 or M32RMSS M32A1 or M32M25S     SM1A33 or M32SM1S a                             M34 x 0.5                       -                         M34 x 0.75 - M35 x 0.5                         -                       M36 x 1.5                                               SM1.5                           -                   T-Mount                                 -             M42 x 1.0                                 -           M49 x 0.75                                         -       SM2   SM2A33 or GCMA1           SM2A22 or M2M32S     -   M52 x 0.75                                           -     M54 x 0.75                                               SM3                                             - M95 x 1.0                                             W26-threaded objectives are sometimes referred to as M26-threaded, but as long as the objective conforms to ISO 9345:2019 or JIS B 7141:2012, it will be compatible with our W26 adapters. The CS- and C-Mount standards feature the same 1.00"-32 threads, but C-Mounts have a 5 mm longer flange-to-sensor distance. The CML05 CS-Mount to C-Mount Adapter allows CS-Mount camera bodies to be used with lenses designed for C-Mount camera bodies.

Internal to Internal Adapters

	INTERNAL THREAD 2
	SM05             RMS             C-Mount             SM1             SM2             M62 x 0.75           SM3

External to External Adapters

	EXTERNAL THREAD 2
	SM05       C-Mount     SM1 SM1T2, SM1T3, or SM1T4     SM2       M52 x 0.75           SM3

Option 2: Choose Your Adapter by Clicking on the Boxes Below