Model: D-21
Spark PlugProperties:
An item containing two or more electrodes across which an electric spark is discharged to ignite a fuel and air mixture, primarily in internal combustion engines. Excludes glow plug; and electrode.
Part D-21 NSN 2920-00-540-7539
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 8511100000
- SITC: 77831
- End Use: Engines and engine parts (carburetors, pistons, rings, and valves)
- NAICS: 336320
- USDA: 1
Freight Class: Spark plugs for internal combustion engines
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