Classification Details
| NMFC | Description | Class |
|---|---|---|
| 177740.00 | With Coiled or Spiral Wire Springs: | |
| 177750.00 | Framed, with or without woven wire fabric tops: | |
| 177750.01 | Not compressed | 200 |
| 177750.02 | With framing member of wire not less than 3 gauge, each assembly compressed to 1/2 inch or more but not exceeding 1 inch in thickness, in wired bundles or crates | 70 |
| 177750.03 | With framing member of other than wire or of wire less than 3 gauge: | |
| 177750.04 | Show more | 100 |
| 177750.05 | Each assembly compressed to 1/2 inch or more but not exceeding 1 inch in thickness, in wired bundles or crates | 85 |
| 177750.06 | Each assembly compressed to less than 1/2 inch in thickness, in packages | 70 |
| 177760.00 | Not framed, mounted on supports, interlaced, in packages: | |
| 177760.01 | Not compressed | 85 |
| 177760.02 | Compressed | 70 |
How to Determine Your Class
To find the correct freight class for your shipment:
- Select the correct subclass within 70–200 by checking how the assembly is protected (crate vs package) and the exact spring form (coiled or spiral). Note NMFC 177740 on the BOL.
- Contain spring energy: band or cage assemblies, cap sharp ends, and use tubes or sleeves to prevent uncoiling and tangling. Example: garage door torsion springs in capped fiber tubes.
- Choose packaging aligned to handling: double‑wall cartons for small sets; blocked and braced wooden crates on 48×40 skids for heavier machinery spring modules.
- Mark “Under Tension—Do Not Cut Bands” and “This Side Up.” Include piece count and dimensions on labels to speed cross‑dock handling and avoid misroutes.
Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.
Business Value
- Tighter quoting with a defined 70–200 class range reduces reclass fees and keeps LTL rates predictable.
- Right container (crate vs package) can align to the appropriate subclass, often lowering damage risk and total landed cost.
- Non-hazardous status widens carrier options and minimizes compliance overhead and surcharges.
- Clear NMFC mapping (177740) streamlines audits, accelerates approvals, and cuts dispute time on freight bills.