NMFC 51168 - Iron/Steel Expansion Joints | Class 50

To find the correct freight class for your shipment:

1. Verify piece weight before booking: items 25 lb or more may ship loose or on skids; anything under 25 lb must be in packages. Example: a 28 lb joint can go loose; a 19 lb joint needs a box or crate.
2. Protect flanges and bellows: install flange covers or end caps, wrap with corrugated and foam, then band to a pallet through lifting lugs without distorting the joint.
3. State the packaging and piece counts on the BOL: list NMFC 51168, Class 50, packaging type (loose vs packages), and each-piece weights to avoid reclass or inspection delays.
4. Plan securement for heavy steel: use blocking, bracing, and corner protectors under bands; keep units upright when required and avoid stacking heavier joints over lighter cartons.

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

• Class 50 rating drives lower LTL rates for rugged metal hardware compared with higher-class fittings, improving landed cost on project shipments.
• Weight-based rule (no density calculation) cuts reclass risk and prevents costly inspection fees or rebills tied to dimension variances.
• Packaging flexibility saves labor: joints 25 lb+ can move loose or on skids, reducing boxing time while keeping compliance intact.
• Clear labeling and standard non-hazmat status speed dock handling, leading to fewer delays and more predictable transit for construction and MRO orders.