NMFC 12090 - Engine Wiring Harnesses in Boxes | Class 125

To find the correct freight class for your shipment:

1. Coil harnesses with wide bend radii, cap every connector, and place assemblies in anti-static bags before boxing with foam or dividers to prevent pin damage.
2. Select crush-rated cartons and avoid top-loading; palletize with corner boards and stretch wrap, and mark Do Not Stack if connector density is high.
3. Detail the BOL as “Aircraft engine wiring harnesses, boxed, NMFC 12090, Class 125, non-hazardous” and include part numbers or kit IDs for traceability.
4. Provide dims for routing even though class is fixed; request limited handling and keep boxes upright to protect orientation-sensitive connectors.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

• Predictable costs from fixed Class 125—no density calculations or reclass surprises.
• Faster quoting and carrier acceptance by clearly listing NMFC 12090 and boxed packaging.
• Lower damage risk through ESD-safe packing and connector protection, reducing claims and AOG delays.
• Non-hazardous status avoids hazmat fees and streamlines airport-to-MRO or OEM supply chain moves.