The Cartridge,impulse, cataloged under National Stock Number 1377-00-261-5371, is classified within Federal Supply Class 1377 (Cartridge and Propellant Actuated Devices and Components) of the Ammunition and Explosives group. The manufacturer of record is Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 1377-00-261-5371 |
| Primary Part Number | 21084-7 |
| Item Name | Cartridge,impulse |
| FSC / FSG | 1377 / 13 — Cartridge and Propellant Actuated Devices and Components |
| Manufacturer | Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc |
| Status | ACTIVE |
| Wrenching Facility | INCLUDED |
| Body Diameter | 0.600 INCHES NOMINAL IN |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Case Threaded Electrical Connection | NOT INCLUDED |
| Net Explosive Weight | 0.0013 STORAGE POUNDS AND 0.0013 TRANSPORTATION POUNDS |
| Dot Proper Shipping Name | CARTRIDGES, POWER DEVICE |
| Charged End Diameter | 0.670 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Dot Identification Number | UN0276 |
| Dot Registration Code | EX1988050731 |
| Dod Ammunition Code | 1377-M948 |
| Detonation Initiation Method | ELECTRIC |
| Case Mounting Thread | INCLUDED |
| Dot Hazard Class/division | 1.4 |
| Hazardous Material Classification Code | 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Dot Warning Label Code | 1.4C |
| Integral Cutting Punch | NOT INCLUDED |
| Color Coded Feature | NOT INCLUDED |
| Thread Size | 0.750-20 |
| Rim | NOT INCLUDED |
| Thread Class | 3A A |
| Gross Weight | 0.3 SHIPPING CONTAINER POUNDS |
| Mounting Thread Series | UNEF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | Hazardous per DLA record (HMIC Y) DOT hazard class/division 1.4 · UN ID UN0276 · warning label 1.4C · 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as CARTRIDGES, POWER DEVICE |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 21084-7 PRIMARY | Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc (USA) |
| 2184-7 PRIMARY | Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc (USA) |
| 21084-5 | Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 68-710057-203 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 1377-M948 | 6/9 Informative reference only U.S. Government activity |
NSN 1377-00-261-5371 is a Cartridge,impulse, manufactured by Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc, classified under FSC 1377, Cartridge and Propellant Actuated Devices and Components. Status: active.
NSN 1377-00-261-5371 has 3 manufacturer part numbers on file: 21084-7 (Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc), 2184-7 (Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc), 21084-5 (Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc).
6 possible matches (shared part number, not a government interchangeability claim): 5977-00-279-8451, 5365-00-847-1910, 5815-01-171-1617. Verify interchangeability with system specifications before substitution.
Key specifications for 21084-7: Wrenching Facility: INCLUDED; Body Diameter: 0.600 INCHES NOMINAL IN; Width Across Flats: 0.875 INCHES NOMINAL IN; Case Threaded Electrical Connection: NOT INCLUDED. 24 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 1377-00-261-5371 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.