The Fuze,mechanical Time, cataloged under National Stock Number 1390-00-203-8548, is classified within Federal Supply Class 1390 (Fuzes and Primers) of the Ammunition and Explosives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1390-00-203-8548 |
| Primary Part Number | 561819 |
| Item Name | Fuze,mechanical Time |
| FSC / FSG | 1390 / 13 — Fuzes and Primers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Delay Time in Seconds | 0.60 MINIMUM AND 30.00 MAXIMUM |
| Fuze Model Number | MK 51 MOD 1 |
| Fuze Wrench | NOT INCLUDED |
| Dod Ammunition Code | 1390-N262 |
| Hazardous Material Classification Code | 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION AND S STORAGE COMPATIBILITY GROUP AND I FIREFIGHTING GROUP AND I COAST GUARD CLASS |
| Unable to Decode | UNABLE TO DECODE |
| Action Time Designation | SELECTIVE DELAY |
| Gross Weight | 101.2 SHIPPING CONTAINER POUNDS |
| Booster | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION AND S STORAGE COMPATIBILITY GROUP AND I FIREFIGHTING GROUP AND I COAST GUARD CLASS |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 561819 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1390-N262 | 6/9 Informative reference only U.S. Government activity |
NSN 1390-00-203-8548 is a Fuze,mechanical Time, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1390, Fuzes and Primers. Status: active.
NSN 1390-00-203-8548 has 1 manufacturer part number on file: 561819 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
3 possible matches (shared part number, not a government interchangeability claim): 1390-00-640-8951, 2915-00-974-0197, 6750-01-427-5510. Verify interchangeability with system specifications before substitution.
Key specifications for 561819: Delay Time in Seconds: 0.60 MINIMUM AND 30.00 MAXIMUM; Fuze Model Number: MK 51 MOD 1; Fuze Wrench: NOT INCLUDED; Dod Ammunition Code: 1390-N262. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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 1390-00-203-8548 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.