Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
Reference imageConfirm configuration by manufacturer part number.
Thorlabs
AI25E4M
Thorlabs AI25E4M — Thread Adapter, Internal to Internal, M4 to 1/4"-20
The Thorlabs AI25E4M is a discontinued internal-to-internal thread adapter featuring M4 and 1/4"-20 threading. Released on September 28, 2004, this component reached its discontinued date on September 6, 2011. Submit the exact part number, quantity, and application requirements to request a quote for remaining inventory.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Thorlabs references — within one business day.
- Manufacturer
- Thorlabs
- Part number
- AI25E4M
- Product series
- Thread Adapter, Internal to Internal, M4 to 1/4"-20
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to AI25E4M.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Product Name
- Thread Adapter, Internal to Internal, M4 to 1/4"-20
- Lifecycle Status
- Discontinued
- Release Date September 28, 2004
- Discontinued Date September 6, 2011
- Release Date
- September 28, 2004
- Discontinued Date
- September 6, 2011
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Thorlabs AI25E4M. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.