NMFC 177820 - Steel Spring Assemblies | Class 70–175

Note 177822: NOTE-Applies only on spring assemblies, the basic spring members of which are made from spring steel, other than wire. Hanger bars, rivets and edge reinforcing wires maybe in separate non-compressed packages.

To find the correct freight class for your shipment:

1. Confirm you have steel spring assemblies other than wire forms. Reference Note 177822 to avoid misclassifying wire coils or formed wire springs under a different item.
2. Determine the NMFC class by density. Weigh the full handling unit and use overall pallet or crate dimensions to compute cubic feet, then map to class 70–175. Example: 48×40×18 in at 1,200 lb ≈ 20 ft³ → 60 lb/ft³, typically class 70.
3. Package for containment and edge protection. Band assemblies tightly with steel strap, add edge guards, block and brace on a sturdy pallet, cap sharp leaf ends, and avoid overhang.
4. Select handling that fits length and weight. Use hardwood skids or steel racks with 4‑way fork entry, mark center of gravity, and consider rust‑inhibiting wrap for bare steel.

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

• Lower freight spend by boosting density. Compress bundles, fill voids, and use compact pallets to move shipments toward class 70.
• Reduce reclass and inspection fees by using the correct article (non‑wire) and noting “Subject to Item 170” with reference to Note 177822 on paperwork.
• Cut damage and downtime with rigid crating or racked transport that prevents flexing and edge damage common with heavy leaf packs.
• Faster dock turns and cleaner counts via unitized, fork‑friendly skids that improve cross‑dock handling and keep transit predictable.