T-SM1LTRR - SM1 (1.035"-40) Stress-Free Retaining Ring
T-SM1LTRR - SM1 (1.035"-40) Stress-Free Retaining Ring
- Design Provides Reduced Stress Clamping Action
- Provides Light-Tight Seal Around an Optic
- Clear Aperture Ø0.82" (Ø20.8 mm)
- Thread SM1 (1.035"-40)
- Thickness 0.16" (4.1 mm)
- Compatible Spanner Wrench T-SPW602 SPW606 or T-SPW801
- Compatible Optic Mounts Any Internally SM1-Threaded Mount
Our Stress-Free Retaining Rings are available with our standard SM05, SM1, or SM2 threadings.
This design uses an O-ring made of Buna-N nitrile rubber to reduce the stress on the optic surface and completely seal out sources of stray light.
Like our standard retaining rings, our stress-free retaining rings contain two slots for compatibility with our selection of spanner wrenches.
| SM1 (1.035"-40.0) Threading | |||
|---|---|---|---|
| Internal Thread, UNS-2B | External Thread, UNS-2A | ||
| Min Major Diameter | 1.0350" | Max Major Diameter | 1.0339" |
| Min Pitch Diameter | 1.0188" | Min Major Diameter | 1.0288" |
| Max Pitch Diameter | 1.0234" | Max Pitch Diameter | 1.0177" |
| Min Minor Diameter (and 83.3% of Thread) |
1.008" | Min Pitch Diameter | 1.0142" |
| Max Minor Diameter (and 64.9% of Thread) |
1.014" | Max Minor Diameter | 1.0068" |