Optical Micrometer Collimator Assembly
An adjustable collimator tube assembly for non-contact optical micrometers that aligns the laser beam path for accurate distance measurement. It contains precision optics and mounting hardware specific to these gauging instruments. Classified under 9031.90.90 as a part of measuring instruments.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the collimator is a complete optical instrument
Complete collimators are classified in heading 9013 as optical appliances.
If imported with the complete laser micrometer
Complete instruments are classified under the specific instrument heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Declare as a part of a measuring instrument under Chapter 90, not as a standalone optical instrument
• Provide documentation showing its specific design for optical micrometers
• Verify if the collimator assembly is considered a complete instrument under heading 9013
Related Products under Tariff item 9031.90.90
Autocollimator Objective Lens Cell
A precision cell housing objective lens assembly for autocollimator angle measuring instruments. The thermal compensation design maintains alignment stability. It is classified under 9031.90.90 as a part for other optical checking appliances.
Calibration Test Gage Block Holder
A precision kinematic mount holding gage blocks under optical microscopes for calibration verification. It ensures accurate positioning during length standard comparison and is a measuring instrument accessory. Classified under 9031.90.90 as a part of measuring instruments.
Digital Readout Interface Cable for Metrology Instruments
A shielded cable assembly designed to connect optical encoders to digital display units in metrology instruments. It ensures noise-free signal transmission for precise measurements, qualifying as an accessory for measuring or checking appliances of Chapter 90.
Fiber Optic Light Guide Bundle for Microscopes
A flexible coherent fiber bundle that transmits illumination to measuring microscope workpieces, maintaining light intensity uniformity. It is an accessory for optical measuring instruments, enhancing their functionality under Chapter 90.
Laser Alignment Lens for Optical Micrometer
A precision-ground optical lens used in laser micrometers to focus the laser beam for measuring object dimensions with micron accuracy. This component is specifically designed as a replacement part for laser micrometers classified under tariff item 9031.41.00. It is classified under 9031.90.90 as a part or accessory of measuring instruments.
Laser Gauge Dust Shield Window
A sapphire or fused silica protective window for laser micrometer optical heads, preventing contamination while maintaining beam transmission. The anti-reflective coating ensures measurement accuracy. This product is classified as a protective part of optical measuring instruments under 9031.90.90.