Laser Gauge Dust Shield Window
Sapphire or fused silica protective window for laser micrometer optical heads (9031.41) preventing contamination while maintaining beam transmission. Anti-reflective coated for measurement accuracy. Classified as protective part under 9031.90.54.00.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If spectacle lenses or optical windows
General protective optical windows classify under 9001
If laboratory glassware windows
Chapter exclusion note 1(c) sends lab glass to 7016
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Transmission spectrum and scratch-dig specs required; hardness certification for sapphire; prevent classification as general watch glass under 7017
Related Products under HTS 9031.90.54.00
Laser Alignment Lens for Optical Micrometer
Precision-ground optical lens used in laser micrometers (HTS 9031.41) for focusing the laser beam to measure object dimensions with micron accuracy. This component is specifically designed as a replacement part for these optical measuring instruments. It falls under 9031.90.54.00 as a part of optical instruments in subheading 9031.41.
Profile Projector Stage Micrometer
High-precision glass slide with etched scale mounted on profile projector worktables (9031.49.70) for stage calibration and measurement verification. Essential accessory for ensuring dimensional accuracy in optical comparators. Classified under 9031.90.54.00 as a part specific to these optical inspection instruments.
Optical Micrometer Collimator Assembly
Adjustable collimator tube assembly for non-contact optical micrometers (9031.41) that aligns the laser beam path for accurate distance measurement. Contains precision optics and mounting hardware specific to these gauging instruments. Falls under 9031.90.54.00 as a dedicated part for listed subheadings.
Optical Micrometer Cooling Heatsink Assembly
Extruded aluminum heatsink with integral fan mount for thermal management of high-power laser micrometer detectors (9031.41). Maintains optical stability during continuous measurement. Thermal part of 9031.90.54.00.
Profile Projector LED Illuminator Module
High-intensity LED ring light module for profile projectors (9031.49.70) providing uniform edge illumination for silhouette measurement. Designed with specific heat sinking and optics integration for these optical comparators. Classified in 9031.90.54.00 as an instrument-specific light source.
Optical Linear Scale Reader Head
Compact optical sensor head for reading glass or steel linear scales in coordinate measuring systems incorporating 9031.41 micrometers. Provides digital position feedback essential for precision measurement. Part of 9031.90.54.00 for specified optical instruments.