Classification Details
| NMFC | Description | Class |
|---|---|---|
| 177960.00 | Steel, other than wire: | |
| 177970.00 | Coiled, made of steel less than 5/16 inch thick: | |
| 177970.01 | In bundles | 85 |
| 177970.02 | In bags, boxes, crates or drums | 70 |
| 177980.00 | Coiled, made of steel 5/16 inch or over in thickness | 55 |
| 178000.00 | Elliptic or semi-elliptic, vehicle or tractor | 55 |
| 178010.00 | Other than coiled, elliptic or semi-elliptic: | |
| 178010.01 | In bundles | 85 |
| 178010.02 | In bags, boxes, crates or drums | 70 |
How to Determine Your Class
To find the correct freight class for your shipment:
- Match your spring type to the correct NMFC sub (coil, leaf, torsion) to determine the proper class within 55–85; confirm the exact subrule before booking.
- Use double‑wall boxes with cell dividers for small coils; crate heavy leaf or die springs. Cap or sleeve ends and add VCI wrap or light oil to deter corrosion.
- Block and brace inside boxes or crates so coils cannot compress or shift. Strap bundles to skids without over‑tensioning and mark packages “Spring Tension—Use Caution.”
- On paperwork, describe “Steel Springs, other than wire,” list packaging (box or crate), piece count, and approximate dimensions/weight to aid handling and avoid inspections.
Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.
Business Value
- Right‑sizing to the lowest eligible class (down to 55) can materially improve LTL rates versus defaulting to class 85.
- Non‑hazardous designation expands carrier options and streamlines tendering, reducing accessorial surprises and dwell time.
- Proper boxing or crating minimizes puncture and recoil damage, driving fewer OS&D claims and better on‑time project delivery.
- Accurate NMFC use prevents reclass and inspection fees, stabilizing landed costs for construction and OEM replenishment schedules.