HS Code for Calibration weights

Calibration weights are classified under Harmonized System (HS) code 8423.90. This classification falls within Chapter 84, which covers "Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof." Heading 8423 specifically addresses "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." Subheading 8423.90 is designated for "Weighing machine weights of all kinds; parts of weighing machinery." Calibration weights are essential for ensuring the accuracy and precision of weighing instruments, making them directly classifiable under this subheading as either "weights of all kinds" or "parts of weighing machinery" due to their integral role in the functionality and maintenance of weighing equipment.

Products Included

• Standard weights for scales
• Test weights for balances
• Precision calibration weights
• Laboratory weights
• Weight sets for calibration
• Reference weights for industrial scales

Common Misclassification

Common misclassifications for calibration weights often involve confusing them with complete weighing instruments or general metal articles. HS 9016.00 covers "Balances of a sensitivity of 5 cg or better, with or without weights." This code is for the complete high-precision balances themselves, not the separate weights used for their calibration. While calibration weights might be made of iron or steel, classifying them under HS 7326 ("Other articles of iron or steel") would be incorrect because their specific function as weights for weighing machinery takes precedence over their material composition. HS 8423.10, which covers "Personal weighing machines, including baby scales; household scales," refers to specific types of weighing machines, not the weights used to calibrate them. The functional specificity of calibration weights is key to their correct classification under 8423.90.

FAQ

What is the HS code for Calibration weights?

The HS code for calibration weights is 8423.90.

Are all weights classified under HS 8423.90?

No, HS code 8423.90 specifically includes "weights of all kinds" when they are intended for use with weighing machinery. This distinguishes them from weights used for other purposes, such as exercise weights (e.g., dumbbells, barbells), which are typically classified under Chapter 95 as articles for sports or physical exercise, or counterweights for machinery, which might fall under other headings depending on their specific application.