The Fuze,mechanical Time and Superqu, cataloged under National Stock Number 1390-00-892-4142, is classified within Federal Supply Class 1390 (Fuzes and Primers) of the Ammunition and Explosives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1390-00-892-4142 |
| Item Name | Fuze,mechanical Time and Superqu |
| FSC / FSG | 1390 / 13 — Fuzes and Primers |
| Status | ACTIVE |
| Assembly Type | INTEGRAL |
| Delay Time in Seconds | 0.00 MINIMUM AND 75.00 MAXIMUM |
| Fuze Model Number | M520 |
| Fuze Wrench | NOT INCLUDED |
| Dod Ammunition Code | 1390-N280 |
| Action Time Designation | SELECTIVE DELAY |
| Booster Model Number | M125 |
| Booster | INCLUDED |
| Reference Number Differentiating Characteristics | AS DIFF BY BOOSTER,ASSEMBLY,TYPE,MODEL NUMBERS,PKG QUANTITY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 73-7-277 | 3/1 Design control — primary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament |
| 1390-N280 | 6/9 Informative reference only U.S. Government activity |
NSN 1390-00-892-4142 is a Fuze,mechanical Time and Superqu, classified under FSC 1390, Fuzes and Primers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1390-00-892-4264. Verify interchangeability with system specifications before substitution.
Key specifications for 1390-00-892-4142: Assembly Type: INTEGRAL; Delay Time in Seconds: 0.00 MINIMUM AND 75.00 MAXIMUM; Fuze Model Number: M520; Fuze Wrench: NOT INCLUDED. 9 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 1390-00-892-4142 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.