Product Overview
Newport UPA-PA2 Platform Adapter - 8-32 to M4 Thread Conversion, Black Anodized Aluminum, Unused
Condition
Unused NOS. Black anodized aluminum body with fine handling scratches on the cylindrical sidewall and light surface scuffs; no wear to the threaded bores or top face. Newport Corporation label marked UPA-PA2 with partial scuff wear. Includes two button-head machine screws and one L-hex allen wrench. Sourced from a government research facility.
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Product Overview
Newport UPA-PA2 is a 2-inch platform adapter that bridges 8-32 and M4 thread standards in optical mounting systems. The black anodized aluminum puck-style body carries both thread markings on the sidewall - 8# and M4 - and a centered threaded bore on the top face. Designed for Newport optical posts, post holders, and optical table accessories, it provides a stable, repeatable interface between components that use these two common thread sizes.
Key Features
- Thread conversion: 8-32 and M4
- Platform diameter: 2-inch form factor
- Material: Black anodized aluminum
- Sidewall markings: 8# and M4 with Newport logo stamp
- Includes two button-head machine screws and one L-hex allen wrench
- Compatible with Newport optical posts, post holders, and optical table accessories
Applications
- Mounting an M4-threaded optical component onto an 8-32 post during laser alignment setup on an optical table
- Integrating Newport-platform components into a mixed-thread breadboard layout without swapping mounting hardware
- Adapting detector or mirror mounts between metric and imperial optical mounting ecosystems in an academic or government lab
- DIY photonics builds and maker projects where an optical-grade thread adapter is needed for a custom mount or breadboard fixture
Frequently Asked Questions
Which thread is on which end - does the 8-32 thread connect to the post and M4 to the component, or is it reversible?
The adapter carries both 8-32 and M4 threads and is designed to interface between components using these two standards. The specific orientation depends on your hardware configuration. Both thread designations are marked on the sidewall of this unit.
Is this compatible with Thorlabs or Edmund Optics posts, or only Newport hardware?
The UPA-PA2 is designed within the Newport optical mounting ecosystem. Compatibility with Thorlabs, Edmund Optics, or other manufacturers' posts depends on whether their hardware uses 8-32 or M4 threads in a 2-inch platform format. If your post or component matches either thread size, physical compatibility is likely - but verify your hardware thread specs before ordering.
What is included with this adapter?
Two button-head machine screws and one L-hex allen wrench are included.
Are the threads in good condition on this specific unit?
Yes. The threaded bores on the top face show no visible wear or damage. The included screws have clean, undamaged threads on both units.
Thread adapters are the unglamorous workhorses of any optical table - nobody thinks about them until the experiment stalls at the mounting step. This one is unused, marked, and ready to close the gap between metric and imperial without a trip to the hardware store.
