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
K4901-B
Thorlabs K4901-B — 6-Piece Aspheric Lens Kit with Adapters, AR Coating: 650-1050 nm
Thorlabs K4901-B is the exact manufacturer part number for 6-Piece Aspheric Lens Kit with Adapters, AR Coating: 650-1050 nm. The official catalog lists this item as discontinued. The official replacement model is K4902-B. Submit the exact part number, quantity, destination, and application details for an RFQ.
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
- K4901-B
- Product series
- 6-Piece Aspheric Lens Kit with Adapters, AR Coating: 650-1050 nm
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to K4901-B.
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
- 6-Piece Aspheric Lens Kit with Adapters, AR Coating: 650-1050 nm
- Lifecycle Status
- Discontinued
- This item has been replaced by K4902-B .
- View its last web presentation.
- Last Web Presentation
- Open
- Release Date
- June 9, 2000
- Discontinued Date
- July 17, 2018
- Official Replacement Model
- K4902-B
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 K4901-B. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.