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The SM1A65 adapter is being used to secure a glue-in Polaris mount in an objective case.
Features
- External SM1 (1.035"-40) Threading
- Internal 1/4"-20 (M6) or 8-32 (M4) Threading
- 1/4" (M6) or #8 (M4) Counterbore
- Compatible with the SPW909 and SPW801 Spanner Wrenches
These anodized aluminum adapters feature external SM1 (1.035"-40) threading, spanner wrench slots, and internal threads or a counterbore that is compatible with many of our optomechanical components. This allows standard 1/4"-20 and 8-32 optomechanics, such as post assemblies and mounts, to be integrated with Thorlabs' components that incorporate our SM1-thread standard, such as our Ø1" lens tube systems. These adapters can also be used to store various optical components in a storage case by utilizing the SM1 threading included in the OC2SM1. An example of this can be seen to the right, where an SM1A65 is being used to secure a POLARIS-C1G glue-in mount for storage in the OC22 canister.
Thorlabs' Threading Specifications
Thorlabs' lens tubes utilize a series of non-standard threadings. Threading specifications are given below for our SM threadings utilized in our lens tube and cage system components so that you can machine mating components to suit your application. We also offer products with C-Mount and RMS threadings, and the specifications for these threadings are also given below. Please note that other manufacturers may have different tolerances for these threads. For other thread specifications that are not listed here, please contact Tech Support.
SM05 Threading: Ø1/2" Lens Tubes, 16 mm Cage Systems |
External Thread, 0.535"-40.0, UNS-2A |
Internal Thread, 0.535"-40.0, UNS-2B |
Max Major Diameter |
0.5340" |
Min Major Diameter |
0.5350" |
Min Major Diameter |
0.5289" |
Min Pitch Diameter |
0.5188" |
Max Pitch Diameter |
0.5178" |
Max Pitch Diameter |
0.5230" |
Min Pitch Diameter |
0.5146" |
Min Minor Diameter (and 83.3% of thread) |
0.508" |
Max Minor Diameter |
0.5069" |
Max Minor Diameter (and 64.9% of thread) |
0.514" |
RMS Threading: Objective, Scan, and Tube Lenses |
External Thread, 0.800"-36.0, UNS-2A |
Internal Thread, 0.800"-36.0, UNS-2B |
Max Major Diameter |
0.7989" |
Min Major Diameter |
0.8000" |
Min Major Diameter |
0.7934" |
Min Pitch Diameter |
0.7820" |
Max Pitch Diameter |
0.7809" |
Max Pitch Diameter |
0.7866" |
Min Pitch Diameter |
0.7774" |
Min Minor Diameter (and 83.3% of thread) |
0.770" |
Max Minor Diameter |
0.7688" |
Max Minor Diameter (and 64.9% of thread) |
0.777" |
C-Mount Threading: Machine Vision Lenses, CCD/CMOS Cameras |
External Thread, 1.000"-32.0, UN-2A |
Internal Thread, 1.000"-32.0, UN-2B |
Max Major Diameter |
0.9989" |
Min Major Diameter |
1.0000" |
Min Major Diameter |
0.9929" |
Min Pitch Diameter |
0.9797" |
Max Pitch Diameter |
0.9786" |
Max Pitch Diameter |
0.9846" |
Min Pitch Diameter |
0.9748" |
Min Minor Diameter (and 83.3% of thread) |
0.966" |
Max Minor Diameter |
0.9651" |
Max Minor Diameter (and 64.9% of thread) |
0.974" |
SM1 Threading: Ø1" Lens Tubes, 30 mm Cage Systems |
External Thread, 1.035"-40.0, UNS-2A |
Internal Thread, 1.035"-40.0, UNS-2B |
Max Major Diameter |
1.0339" |
Min Major Diameter |
1.0350" |
Min Major Diameter |
1.0288" |
Min Pitch Diameter |
1.0188" |
Max Pitch Diameter |
1.0177" |
Max Pitch Diameter |
1.0234" |
Min Pitch Diameter |
1.0142" |
Min Minor Diameter (and 83.3% of thread) |
1.008" |
Max Minor Diameter |
1.0068" |
Max Minor Diameter (and 64.9% of thread) |
1.014" |
SM30 Threading: Ø30 mm Lens Tubes |
External Thread, M30.5x0.5 |
Internal Thread, M30.5x0.5 |
Max Major Diameter |
30.480 mm |
Min Major Diameter |
30.500 mm |
Min Major Diameter |
30.371 mm |
Min Pitch Diameter |
30.175 mm |
Max Pitch Diameter |
30.155 mm |
Max Pitch Diameter |
30.302 mm |
Min Pitch Diameter |
30.059 mm |
Min Minor Diameter (and 83.3% of thread) |
29.959 mm |
Max Minor Diameter |
29.938 mm |
Max Minor Diameter (and 64.9% of thread) |
30.094 mm |
SM1.5 Threading: Ø1.5" Lens Tubes |
External Thread, 1.535"-40, UNS-2A |
Internal Thread, 1.535"-40, UNS-2B |
Max Major Diameter |
1.5339" |
Min Major Diameter |
1.535" |
Min Major Diameter |
1.5288" |
Min Pitch Diameter |
1.5188" |
Max Pitch Diameter |
1.5177" |
Max Pitch Diameter |
1.5236" |
Min Pitch Diameter |
1.5140" |
Min Minor Diameter (and 83.3% of thread) |
1.508" |
Max Minor Diameter |
1.5068" |
Max Minor Diameter (and 64.9% of thread) |
1.514" |
SM2 Threading: Ø2" Lens Tubes, 60 mm Cage Systems |
External Thread, 2.035"-40.0, UNS-2A |
Internal Thread, 2.035"-40.0, UNS-2B |
Max Major Diameter |
2.0338" |
Min Major Diameter |
2.0350" |
Min Major Diameter |
2.0287" |
Min Pitch Diameter |
2.0188" |
Max Pitch Diameter |
2.0176" |
Max Pitch Diameter |
2.0239" |
Min Pitch Diameter |
2.0137" |
Min Minor Diameter (and 83.3% of thread) |
2.008" |
Max Minor Diameter |
2.0067" |
Max Minor Diameter (and 64.9% of thread) |
2.014" |
SM3 Threading: Ø3" Lens Tubes |
External Thread, 3.035"-40.0, UNS-2A |
Internal Thread, 3.035"-40.0, UNS-2B |
Max Major Diameter |
3.0337" |
Min Major Diameter |
3.0350" |
Min Major Diameter |
3.0286" |
Min Pitch Diameter |
3.0188" |
Max Pitch Diameter |
3.0175" |
Max Pitch Diameter |
3.0242" |
Min Pitch Diameter |
3.0133" |
Min Minor Diameter (and 83.3% of thread) |
3.008" |
Max Minor Diameter |
3.0066" |
Max Minor Diameter (and 64.9% of thread) |
3.014" |