NMFC 57160 - Hand‑Wound Timing Devices in Boxes | Class 100

To find the correct freight class for your shipment:

1. Pack each hand‑wound timer in a rigid corrugated box with dense cushioning (foam inserts or molded pulp) to protect gears, knobs, and dials; ship with the mainspring relaxed, not fully wound.
2. If sending multiple units, place boxed items in a master carton or on a pallet with corner boards and stretch wrap; avoid top‑loading heavy goods to prevent crush damage to the mechanisms.
3. Document clearly on the BOL: “Timing devices, hand wound, NOI, in boxes — NMFC 57160, Class 100.” Density isn’t needed for rating, but include accurate total weight and dimensions for the carrier.
4. Before sealing, cap or pad any protruding shafts, verify the timer ticks and resets, and use “Fragile/Do Not Crush” and “This Side Up” labels when delicate dials or lenses are present.

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

• Predictable pricing with fixed Class 100 means faster, cleaner quotes and fewer reclass disputes compared to density‑based items.
• Non‑hazardous status streamlines carrier acceptance and reduces compliance overhead, helping bookings move without special handling fees.
• Simple boxed‑only requirement makes packaging workflows repeatable for OEMs and distributors, speeding kitting and outbound fulfillment.
• Proper cushioning lowers OS&D risk on delicate mechanisms, cutting replacement costs and protecting customer satisfaction on retail or MRO orders.