The Filter Unit,gas-Particulate, cataloged under National Stock Number 4240-01-339-6866, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-339-6866 |
| Item Name | Filter Unit,gas-Particulate |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| Supplementary Features | INTENDED USE: THE ITEM WILL BE USED TO PROVIDE BLOWN AIR TO AN AIRCREW EYE/RESPIRATORY (AERP) HOOD/MASK ASSEMBLY WORN BY TRI-SERVICES AIRCREW DURING GROUND AND FLIGHT OPERATIONS |
| Filtration Rate | 1.000 CUBIC FEET PER MINUTE MINIMUM AND 2.000 CUBIC FEET PER MINUTE MAXIMUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 560-14000-8 | 1/2 Source control — Government-approved source U.S. Government activity |
| 51620-70 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4240-01-339-6866 is a Filter Unit,gas-Particulate, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
Key specifications for 4240-01-339-6866: Supplementary Features: INTENDED USE: THE ITEM WILL BE USED TO PROVIDE BLOWN AIR TO AN AIRCREW EYE/RESPIRATORY (AERP) HOOD/MASK ASSEMBLY WORN BY TRI-SERVICES AIRCREW DURING GROUND AND FLIGHT OPERATIONS; End Item Identification: MASK HOOD ASSEMBLY,MBU-19/P ZZZVGCQU-71P BLOWER ASSEMBLY (4 FT HOSE) NSN 4240-021-338-8894 (-6 IS 6 FT HOSE); NSN 4240-01-338-6066 (-7 IS 2 FT HOSE) FT; Filtration Rate: 1.000 CUBIC FEET PER MINUTE MINIMUM AND 2.000 CUBIC FEET PER MINUTE MAXIMUM. 2 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 4240-01-339-6866 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.