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T-SM1.5RR - SM1.5 Retaining Ring for Ø1.5" Lens Tubes and Mounts

Fosco Connect Part No.: T-SM1.5RR

  • $ 19.25 or



T-SM1.5RR - SM1.5 Retaining Ring for Ø1.5" Lens Tubes and Mounts

Product Drawing

  • Standard Retaining Rings for Optics Ranging from Ø30 mm to Ø1.5"
  • Thread SM1.5 (1.535"-40)
  • Thickness 0.10" (2.5 mm)
  • Compatible Optic Mounts Any Internally SM1.5-Threaded Mount
  • Clear Aperture Ø1.38" (Ø34.9 mm)
  • Compatible Spanner Wrench T-SPW801 or T-SPW608
T-SM1.5 (1.535"-40.0) Threading
Internal Thread, UNS-2B External Thread, UNS-2A
Min Major Diameter 1.5350" Max Major Diameter 1.5339"
Min Pitch Diameter 1.5188" Min Major Diameter 1.5288"
Max Pitch Diameter 1.5236" Max Pitch Diameter 1.5177"
Min Minor Diameter
(and 83.3% of Thread)
1.508" Min Pitch Diameter 1.5140"
Max Minor Diameter
(and 64.9% of Thread)
1.514" Max Minor Diameter 1.5068"
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