Does C-Mount, M25.5x0.5mm, SM1 the same thing?

August 6, 2025

C-Mount, M25.5x0.5mm, SM1 are not the same thing. And they are not compatible with each other.

C-Mount: 1''-32 tpi

SM1: 1.035" x 40 tpi

M25.5x0.5mm : 25.5mm outer diameter, 0.5mm pitch

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