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T-SM38RR - M38 x 0.5 Retaining Ring

Fosco Connect Part No.: T-SM38RR

  • $ 25.00 or



T-SM38RR - M38 x 0.5 Retaining Ring

Product Drawing

  • Standard Retaining Rings for Optics Ranging from Ø30 mm to Ø1.5"
  • Thread M38 x 0.5 
  • Thickness 0.10" (2.5 mm)
  • Compatible Spanner Wrench T-SPW801
  • Clear Aperture Ø1.38" (Ø34.9 mm)
T-M38 x 0.5 Threading
Internal Thread External Thread
Min Major Diameter 38.000 mm Max Major Diameter 37.980 mm
Min Pitch Diameter 37.675 mm Min Major Diameter 37.871 mm
Max Pitch Diameter 37.805 mm Max Pitch Diameter 37.655 mm
Min Minor Diameter
(and 83.3% of Thread)
37.459 mm Min Pitch Diameter 37.557 mm
Max Minor Diameter
(and 64.9% of Thread)
37.594 mm Max Minor Diameter 37.438 mm
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