The Rocket Motor, cataloged under National Stock Number 1340-00-620-3444, is classified within Federal Supply Class 1340 (Rockets, Rocket Ammunition and Rocket Components) of the Ammunition and Explosives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1340-00-620-3444 |
| Primary Part Number | LD270349 |
| Item Name | Rocket Motor |
| FSC / FSG | 1340 / 13 — Rockets, Rocket Ammunition and Rocket Components |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Igniter Model Number | MK 125 MOD 2 OR 4 |
| Nominal Thrust | 7.200 POUNDS LBS |
| Propellant Inhibitor | INCLUDED |
| Specific Launcher for Which Designed | NOT DESIGNED FOR SPECIFIC LAUNCHER |
| Nominal Burning Time in Seconds | 1.69 |
| Model Number | MK 4 ALL MODS |
| Motor Propellant Material | BALLISTITE |
| Motor Propellant Grain Weight | 6.40 POUNDS LBS |
| Net Explosive Weight | 6.4 STORAGE POUNDS AND 6.4 TRANSPORTATION POUNDS |
| Straight Section Outside Diameter | 2.250 INCHES NOMINAL IN |
| Dot Registration Code | EX1988060936 |
| Unable to Decode | UNABLE TO DECODE |
| Dod Ammunition Code | 1340-J102 |
| Igniter | INCLUDED |
| Size Designation | 2.75 INCH IN |
| Hazardous Material Classification Code | 1.3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Resonance Rod | INCLUDED |
| Propellant Accommodation Type | EXTRUDED CYLINDER SOLID W/INTERNAL STAR-SHAPED LONGITUDINAL CAVITY |
| Specific Usage Design | NOT DESIGNED FOR SPECIFIC MISSILE |
| Cable Assembly Connector Type | INTEGRAL CONTACT |
| Motor Propellant Grain Model Number | MK 43 ALL MODS |
| Cable Assembly Model Number | NOT ASSIGNED |
| Motor Propellant Grain Quantity | 1 |
| Gross Weight | 122.0 SHIPPING CONTAINER POUNDS AND 1574.0 PALLET POUNDS |
| Integral Stabilization Method | FIN |
| Igniter Installation | INSTALLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | Hazardous per DLA record (HMIC Y) 1.3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| LD270349 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1569418 | 5/1 Secondary reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 1340-J102 | 6/9 Informative reference only U.S. Government activity |
NSN 1340-00-620-3444 is a Rocket Motor, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 1340, Rockets, Rocket Ammunition and Rocket Components. Status: active.
NSN 1340-00-620-3444 has 1 manufacturer part number on file: LD270349 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
3 possible matches (shared part number, not a government interchangeability claim): 1340-00-910-9694, 1340-00-935-6077, 1340-01-143-5956. Verify interchangeability with system specifications before substitution.
Key specifications for LD270349: Igniter Model Number: MK 125 MOD 2 OR 4; Nominal Thrust: 7.200 POUNDS LBS; Propellant Inhibitor: INCLUDED; Specific Launcher for Which Designed: NOT DESIGNED FOR SPECIFIC LAUNCHER. 27 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). The government record also carries hazard data: DOT hazard class, UN number, or related classification fields. Special handling, storage, and shipping requirements apply per the cited government fields.
NSN 1340-00-620-3444 has DEMIL Code G. 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.