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T-SM19RR - M19.5 x 0.5 Retaining Ring for Ø19 mm Lens Mounts

Fosco Connect Part No.: T-SM19RR

  • $ 18.00 or



T-SM19RR - M19.5 x 0.5 Retaining Ring for Ø19 mm Lens Mounts

Product Drawing

  • 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 M19.5 x 0.5
  • Thickness 0.08" (2.0 mm)
  • Compatible Spanner Wrench T-SPW801
  • Clear Aperture Ø0.64" (Ø16.3 mm)
SM19 (M19.5 x 0.5) Threading
Internal Thread External Thread
Min Major Diameter 19.500 mm Max Major Diameter 19.479 mm
Min Pitch Diameter 19.175 mm Min Major Diameter 19.371 mm
Max Pitch Diameter 19.296 mm Max Pitch Diameter 19.155 mm
Min Minor Diameter
(and 83.3% of Thread)
18.959 mm Min Pitch Diameter 19.063 mm
Max Minor Diameter
(and 64.9% of Thread)
19.094 mm Max Minor Diameter 18.938 mm
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