Other
Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight-operated counting or checking machines; weighing machine weights of all kinds; parts of weighing machinery: > Weighing machine weights of all kinds; parts of weighing machinery: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8423.90.90.00
Semiconductor Wafer Weighing Load Cell
A precision load cell designed for integration into wafer weighing scales used in semiconductor manufacturing to measure the mass of silicon wafers during quality control. It falls under HTS 8423.90.90.00 as a part of weighing machinery specifically for high-accuracy applications in semiconductor processing. This component ensures compliance with tight tolerances in wafer preparation stages like grinding and polishing.
Crystal Boule Weighing Platform
A specialized stainless steel platform for scales used to weigh monocrystalline semiconductor boules produced by Czochralski crystal pullers. Classified under HTS 8423.90.90.00 as a part of weighing machinery tailored for semiconductor material growth processes. It supports accurate mass verification post-crystal pulling to monitor yield and purity.
Wafer Slicing Saw Weight Calibration Kit
A set of precision test weights and fixtures for calibrating weighing systems on wafer slicing saws used in semiconductor wafer preparation. Falls under HTS 8423.90.90.00 as weighing machine weights essential for maintaining accuracy in boule slicing operations. Ensures dimensional consistency from crystal grinders to final wafers.
Wafer Grinder Scale Pan Assembly
Custom pan assembly for inline scales on wafer grinders, lappers, and polishers to weigh wafers pre- and post-processing for flatness control. Classified in HTS 8423.90.90.00 as other parts of weighing machinery critical to semiconductor wafer preparation tolerances. Supports statistical process control in fabs.
Float Zone Crystal Puller Weighbridge
Heavy-duty weighbridge module for float zone crystal growers/pullers to monitor boule growth weight in real-time during semiconductor material production. Under HTS 8423.90.90.00 as a weighing machinery part for high-purity monocrystalline processing. Critical for process optimization in gallium arsenide fabs.
Semiconductor Wafer Mass Balance Housing
Protective housing enclosure for precision balances used in measuring semiconductor wafer mass post-slicing and pre-fabrication. HTS 8423.90.90.00 covers it as other parts ensuring cleanroom stability for weighing operations in wafer prep. Shields against contamination during flatness and tolerance checks.
Boule Grinder Weighing Fixture Set
Fixture set for securing crystal boules on scales during diameter grinding in semiconductor wafer manufacturing. Falls under HTS 8423.90.90.00 as parts of weighing machinery for precise flats indication on conductivity/resistivity. Enables accurate boule preparation before slicing.