8431 - Parts suitable for use solely or principally with the machinery of headings 8425 to 8430:
Sub-classifications
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8431 1000
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8431 1000 10
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8431 1000 90
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8431 2000 00
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8431 3100 20
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8431 3100 40
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8431 3100 60
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8431 3900
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8431 3900 10
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8431 3900 50
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8431 3900 80
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8431 4100
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8431 4100 20
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8431 4100 40
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8431 4100 60
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8431 4100 80
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8431 4200 00
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8431 4380
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8431 4380 20
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8431 4380 40
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8431 4380 60
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8431 4380 90
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8431 49
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8431 4910
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8431 4910 90
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8431 4990
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8431 4990 05
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8431 4990 10
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8431 4990 15
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8431 4990 20
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8431 4990 25
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8431 4990 30
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8431 4990 35
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8431 4990 36
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8431 4990 38
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8431 4990 44
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8431 4990 50
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8431 4990 55
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8431 4990 81
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8431 4990 84
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8431 4990 90
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8431 4990 95
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Overview
Heading 8431 encompasses essential parts and components specifically designed for use with the broad range of machinery classified under headings 8425 through 8430. This includes a vast array of machinery such as winches, hoists, cranes, lifting machinery, earth-moving equipment, and road construction machinery. The critical criterion for classification within 8431 is that the part must be suitable for use *solely or principally* with one of these specified machines, distinguishing it from general-purpose mechanical parts that might be used across multiple types of machinery or industries.
Unlike sibling categories that may cover finished machinery or other distinct product groups (e.g., live animals in Chapter 01), heading 8431 focuses exclusively on components. The specific nature of these parts can range from gears, bearings, and hydraulic systems to specialized structural elements and control mechanisms, all engineered for the particular operational demands of the machinery they serve.
The subcategories within 8431 further refine classification based on the specific parent machinery heading. For instance, parts for machinery of heading 8425, such as lifting and hoisting equipment, are distinguished from parts designed for machinery under headings 8426, 8429, or 8430, which typically cover more specialized equipment like ships' derricks, civil engineering machinery, or harvesting machinery. This detailed breakdown ensures precise classification according to the intended application and design of the component part.