Classification · CBLE study guide
Classification: machinery, vehicles & instruments (Ch. 84-92)
- 42past questions in CBLE Pass
- ≈2questions on a typical 80-question exam
- HTSUS Sections XVI-XVIIIwhere the rules live
Common traps
Wrong answers on past exams cluster around a few beliefs. Here is each one, and what the rule actually says.
Commercial vs. domestic food machines
“Any food mixer is a domestic appliance of 8509 or refrigerating equipment.”
The rule: Heading 8509 is for domestic appliances (Ch. 85 Note 4). Machines designed for commercial food preparation are 8438 (8438.80 other machinery).
Remember: Commercial use → 8438.
HTSUS Ch. 85 Note 4 · HTSUS 8438
Electric motorcycles
“Electric motorcycles are classified by engine displacement or the low-power suffix.”
The rule: Motorcycles with electric motors are 8711.60; statistical suffix .50 is ≤250 W, others .90.
Remember: Electric → 8711.60; >250 W → .90.
HTSUS 8711.60
Vehicle-specific floor mats
“Molded vehicle mats are plastic floor coverings, rubber mats, or textile carpets.”
The rule: CBP classifies molded thermoplastic mats specifically shaped for particular vehicles as accessories of 8708.99. 3918.10 is PVC; 4016.91 is vulcanized rubber; 5704 is felt textile.
Remember: Vehicle-specific molded TPE → 8708.
HTSUS 8708.99 · GRI 1
Digital cameras
“Cameras recording to memory cards are photographic cameras of 9006.”
The rule: Digital still and video cameras recording to semiconductor media are in 8525 (since 2022, 8525.89); 9006 covers film cameras.
Remember: Digital → 8525.
HTSUS 8525.89 · HTSUS 9006
Vehicle alternators
“Used alternators are vehicle parts of 8708 or starter motors.”
The rule: Generators for internal combustion engines (alternators) are 'other generators' in 8511.50, even if used.
Remember: Alternator → 8511.50.
HTSUS 8511.50 · HTSUS Section XVII, Note 2
Doorbells vs. vehicle signaling
“Any sound signaling apparatus goes to 8512 or 'other'.”
The rule: 8512 covers signaling equipment of a kind used on cycles or motor vehicles. Doorbells and chimes are named in 8531.80.15.
Remember: Doorbell → 8531.80.15.
HTSUS 8531.80.15 · HTSUS 8512
Try a past question
October 2026 CBLE, question 38
Of the four choices below, which is the best CLASSIFICATION of a steel hairspring (balance spring)? It is a small, slender, flat-coiled spring that regulates a mechanical watch's weighted balance wheel. It causes the wheel to oscillate back and forth in a pendulum-like motion several times per second, which controls the movement of the watch's hands automatically without human intervention. The mechanical watches that use these hairsprings do not contain any electrical connectors, insulators, coils, contacts, or other electrical features.
Show the answer and why
A. Incorrect. Ch. 91 Note 1(c) sends watch springs to 9114.
B. Incorrect. 9110 is complete or unassembled watch movements; a hairspring alone is a watch part (9114.90).
C. Incorrect. 9111 is watch cases and parts; a hairspring isn't a case part (9114.90).
D. Correct. Watch springs, including hairsprings, are watch parts (Ch. 91 Note 1(c)) → 9114.90.34.
HTSUS Ch. 91 Note 1(c) · law as of 2026-11-09
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