Classification Details
| NMFC | Description | Class |
|---|---|---|
| 66420.00 | Show more | |
| 66420.01 | Less than 1 | 400 |
| 66420.02 | 1 but less than 2 | 300 |
| 66420.03 | 2 but less than 4 | 250 |
| 66420.04 | 4 but less than 6 | 175 |
| 66420.05 | 6 but less than 8 | 125 |
| 66420.06 | 8 but less than 10 | 100 |
| 66420.07 | 10 but less than 12 | 92.5 |
| 66420.08 | 12 but less than 15 | 85 |
| 66420.09 | 15 but less than 22.5 | 70 |
| 66420.10 | 22.5 but less than 30 | 65 |
| 66420.11 | 30 but less than 35 | 60 |
| 66420.12 | 35 but less than 50 | 55 |
| 66420.13 | 50 or greater | 50 |
How to Determine Your Class
To find the correct freight class for your shipment:
- Confirm density: weigh each sealed box, measure L×W×H in inches, convert to cubic feet (in³/1728), then PCF = weight ÷ cubic feet. Example: 24×16×12 in, 42 lb → 2.66 cu ft → 15.8 pcf.
- Package small hardware by SKU in poly bags or trays, add dividers to stop abrasion, and use sturdy corrugated boxes with tight void fill so pieces don’t spill or rattle.
- Publish the code on paperwork: note “NMFC 66420, density-based class per Item 170, packaging: boxes” on the BOL, and include the PCF and carton count to prevent reclass.
- Palletize smart: keep cartons within manual lift limits, use edge protectors, shrink wrap and strap, and avoid overhang—dense metal parts can crush lighter freight.
Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.
Business Value
- Lower rates through density control: packing more product and less dunnage can push PCF up and the freight class down, cutting LTL spend.
- Fewer carrier fees: precise PCF and NMFC 66420 on the BOL reduces reweigh/reclass charges and speeds dock workflows.
- Damage and loss mitigation: inner bags, dividers, and sealed boxes keep tiny fasteners contained, minimizing claims and repacks.
- Simplified compliance: non-hazardous fastener parts face fewer restrictions, broadening carrier options and shortening transit lead times.