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T-SM10RR - M10.5 x 0.5 Retaining Ring for Ø10 mm Lens Mounts

Fosco Connect Part No.: T-SM10RR

  • $ 18.25 or



T-SM10RR - M10.5 x 0.5 Retaining Ring for Ø10 mm Lens Mounts

Product Drawing

Thread M10.5 x 0.5
Thickness 0.07" (1.7 mm)
Clear Aperture Ø0.35" (Ø8.8 mm)
Internal Thread External Thread
Min Major Diameter 10.500 mm Max Major Diameter 10.480 mm
Min Pitch Diameter 10.175 mm Min Major Diameter 10.371 mm
Max Pitch Diameter 10.289 mm Max Pitch Diameter 10.155 mm
Min Minor Diameter
(and 83.3% of Thread)
9.959 mm Min Pitch Diameter 10.068 mm
Max Minor Diameter
(and 64.9% of Thread)
10.094 mm Max Minor Diameter 9.938 mm

Our Standard Retaining Rings are manufactured from anodized aluminum and are offered in sizes to match our optic mounts and lens tubes.

They maximize the clear aperture while providing sufficient holding force. Securing an optic using a retaining ring is a stable method for holding the optic since the optic is retained along its entire edge instead of just at a few points. Each retaining ring is machined with two slots for compatibility with our selection of spanner wrenches.

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