The Decoupler Assy., cataloged under National Stock Number 2240-01-494-8549, is classified within Federal Supply Class 2240 (Locomotive and Rail Car Accessories and Components) of the Railway Equipment group. The manufacturer of record is Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Decoupler Assy. |
| FSC / FSG | 2240 — Locomotive and Rail Car Accessories and Components (FSG 22) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 2240-01-494-8549 |
| Primary Part Number | 596-7409748-A3 |
| Item Name | Decoupler Assy. |
| FSC / FSG | 2240 / 22 — Locomotive and Rail Car Accessories and Components |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 596-7409742-45 | Naval Sea Systems Command (USA) |
| 596-7409748-A3 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B831-6000-45 | 5/2 Secondary reference U.S. Government activity |
| B831-6500-A3 | 5/2 Secondary reference U.S. Government activity |
NSN 2240-01-494-8549 is a Decoupler Assy., manufactured by Naval Sea Systems Command, classified under FSC 2240, Locomotive and Rail Car Accessories and Components. Status: active.
NSN 2240-01-494-8549 has 2 manufacturer part numbers on file: 596-7409742-45 (Naval Sea Systems Command), 596-7409748-A3 (Naval Sea Systems Command).
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 2240-01-494-8549 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.