T-SM18RR - 0.750"-40 Retaining Ring for Ø18 mm Lens Mounts
T-SM18RR - 0.750"-40 Retaining Ring for Ø18 mm Lens Mounts
- Standard Retaining Rings for Optics Ranging from Ø13 mm to Ø1"
- Retaining Rings with RMS (0.800"-36) and C-Mount (1.00"-32) Threads Available
- Thread 0.750"-40
- Thickness 0.08" (2.0 mm)
- Compatible Spanner Wrench T-SPW801
- Clear Aperture Clear Aperture Ø0.62" (Ø15.7 mm)
| 0.750"-40 Threading | |||
|---|---|---|---|
| Internal Thread | External Thread | ||
| Min Major Diameter | 0.7500" | Max Major Diameter | 0.7490" |
| Min Pitch Diameter | 0.7338" | Min Major Diameter | 0.7439" |
| Max Pitch Diameter | 0.7382" | Max Pitch Diameter | 0.7328" |
| Min Minor Diameter (and 83.3% of Thread) |
0.723" | Min Pitch Diameter | 0.7294" |
| Max Minor Diameter (and 64.9% of Thread) |
0.729" | Max Minor Diameter | 0.7219" |