The Filter Unit,gas-Particulate, cataloged under National Stock Number 4240-01-338-6066, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4240-01-338-6066 |
| Item Name | Filter Unit,gas-Particulate |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| FSC Application Data | METAL: ALUMINUM ALLOY; POWER SOURCE: BATTERY AND AIRCRAFT; OVERALL SIZE: 5 15/16 INCH BY 8 5/8 INCH IN |
| Supplementary Features | MAJOR COMPONENT: BLOWER; FILTER; QUICK RELEASE; BATTERY; HOSE ASSEMBLY:6 FT HOSE (560-1400-1,-2,-5,-6) AND 2 FT HOSE (560-14000-3,-7; AIRCRAFT MOUNTING BRACKET NSN 1560-01-333-0573 FT |
| User Designator | AIRCRAFT CREWMAN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 51620-60 | 3/2 Design control — primary reference U.S. Government activity |
| CQU-7/P | 5/1 Secondary reference Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc |
| 560-14000-7 | 5/2 Secondary reference U.S. Government activity |
| 51620-30 | 5/9 Secondary reference U.S. Government activity |
| 560-14000-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4240-01-338-6066 is a Filter Unit,gas-Particulate, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4240-01-338-8894, 4240-01-343-3443. Verify interchangeability with system specifications before substitution.
Key specifications for 4240-01-338-6066: FSC Application Data: METAL: ALUMINUM ALLOY; POWER SOURCE: BATTERY AND AIRCRAFT; OVERALL SIZE: 5 15/16 INCH BY 8 5/8 INCH IN; Supplementary Features: MAJOR COMPONENT: BLOWER; FILTER; QUICK RELEASE; BATTERY; HOSE ASSEMBLY:6 FT HOSE (560-1400-1,-2,-5,-6) AND 2 FT HOSE (560-14000-3,-7; AIRCRAFT MOUNTING BRACKET NSN 1560-01-333-0573 FT; Special Features: USED TO PROVIDE BLOWN AIR TO AN AIRCREW EYE/RESPIRATORY PROTECTION (AERP) HOOD/MASK ASSEMBLY WORN BY TRI-SERVICES AIRCREW DURING GROUND AND FLIGHT OPERATIONS; End Item Identification: CQU-7/P BLOWER ASSEMBLY. 3 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4240-01-338-6066 has DEMIL Code C. 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.