T-SM42RR - M42.5 x 0.5 Retaining Ring
T-SM42RR - M42.5 x 0.5 Retaining Ring
- Standard Retaining Rings for Optics Ranging from Ø39 mm to Ø2"
- Thread M42.5 x 0.5
- Thickness 0.10" (2.5 mm)
- Compatible Spanner Wrench T-SPW801
- Clear Aperture Ø1.55" (Ø39.5 mm)
| T-M42.5 x 0.5 Threading | |||
|---|---|---|---|
| Internal Thread | External Thread | ||
| Min Major Diameter | 42.500 mm | Max Major Diameter | 42.480 mm |
| Min Pitch Diameter | 42.175 mm | Min Major Diameter | 42.371 mm |
| Max Pitch Diameter | 42.306 mm | Max Pitch Diameter | 42.155 mm |
| Min Minor Diameter (and 83.3% of Thread) |
41.959 mm | Min Pitch Diameter | 42.056 mm |
| Max Minor Diameter (and 64.9% of Thread) |
42.094 mm | Max Minor Diameter | 41.938 mm |