| Code | 670756 | Type | Coaxial Optical Mounting Plate | |
| Material | 6061-T6 Aluminum | Surface Finish | Black Anodized | |
| Maximum Optics Thickness | 8mm | Compatible Optics Diameter | Ø50.8mm | |
| Optics Mounting Method | Dual Retaining Rings | Coaxial Rod Fixation | Setscrew | |
| Optics Mounting Hole Specification |
SM2 Threaded Through-Hole |
Mounting Hole Specification / Quantity |
M4 / 1pc |
|
| Compatible Coaxial System |
6mm Coaxial System |
Included Retaining Rings / Quantity |
SM2R / 2pcs |
The OPB-12.5B Coaxial Mounting Plate is designed for Ø50.8 mm optical components and uses dual retaining rings (2 × SM2R included) for secure fixation. The central SM2-threaded through-hole is compatible with Ø50.8 mm lens tubes.
OPB-12.5B supports optics up to 8 mm thick. For components thicker than 8 mm, they can be pre-mounted in a Ø50.8 mm lens tube and then threaded onto the OPB-12.5B. The plate is fully compatible with 60 mm coaxial systems.














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