The Rocket Motor, cataloged under National Stock Number 1340-01-307-2678, is classified within Federal Supply Class 1340 (Rockets, Rocket Ammunition and Rocket Components) of the Ammunition and Explosives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1340-01-307-2678 |
| Item Name | Rocket Motor |
| FSC / FSG | 1340 / 13 — Rockets, Rocket Ammunition and Rocket Components |
| Status | ACTIVE |
| Propellant Inhibitor | NOT INCLUDED |
| Model Number | MK66 |
| Motor Propellant Material | INERT MATERIAL |
| Straight Section Outside Diameter | 2.750 INCHES NOMINAL IN |
| Dod Ammunition Code | 1340-H308 |
| Igniter | NOT INCLUDED |
| Size Designation | 2.75 INCH IN |
| Motor Propellant Grain Model Number | MK 90 MOD 0 |
| Motor Propellant Grain Quantity | 1 |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY PACKAGING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| MK66-0 | 5/1 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 1340-H308 | 6/9 Informative reference only U.S. Government activity |
| 233AS431 | 3/1 Design control — primary reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 1340-01-307-2678 is a Rocket Motor, classified under FSC 1340, Rockets, Rocket Ammunition and Rocket Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1340-01-554-4588. Verify interchangeability with system specifications before substitution.
Key specifications for 1340-01-307-2678: Propellant Inhibitor: NOT INCLUDED; Model Number: MK66; Motor Propellant Material: INERT MATERIAL; Straight Section Outside Diameter: 2.750 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1340-01-307-2678 has DEMIL Code D. 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.