The Hood,chemical-Biological Mask, cataloged under National Stock Number 4240-01-338-1647, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Ilc Dover Lp. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-338-1647 |
| Primary Part Number | 0000-110521-01 |
| Item Name | Hood,chemical-Biological Mask |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Ilc Dover Lp |
| Status | ACTIVE |
| FSC Application Data | HOOD,GAS MASK,TOXICOLOGICAL AGENTS PROTECTIVE (HGU-65P) |
| Supplementary Features | SIMILAR TO NSN 4240-01-189-9423; MOUNTING: FITS OVER MCU-2/P AND MCU-2A/P MASK AND COVERS THE HEAD AND NECK AREA; MATERIAL: HOOD FABRIC IS IMPERMEABLE/RESISTANT TO CHEMICAL-BIOLOGICAL WARFARE AGENTS; WEIGHT: 4 OZ; INSTALLATION: CARRIED BY GROUND CREW A |
| Color | GREEN, CAMOUFLAGE, US ARMY, 483 AND SAND, DESERT OUTSIDE |
| Environmental Protection | CHEMICAL RESISTANT AND TOXICOLOGICAL AGENTS RESISTANT |
| User Designator | ENLISTED MAN AND OFFICER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 0000-110521-01 PRIMARY | Ilc Dover Lp (USA) |
NSN 4240-01-338-1647 is a Hood,chemical-Biological Mask, manufactured by Ilc Dover Lp, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-338-1647 has 1 manufacturer part number on file: 0000-110521-01 (Ilc Dover Lp).
Key specifications for 0000-110521-01: FSC Application Data: HOOD,GAS MASK,TOXICOLOGICAL AGENTS PROTECTIVE (HGU-65P); Supplementary Features: SIMILAR TO NSN 4240-01-189-9423; MOUNTING: FITS OVER MCU-2/P AND MCU-2A/P MASK AND COVERS THE HEAD AND NECK AREA; MATERIAL: HOOD FABRIC IS IMPERMEABLE/RESISTANT TO CHEMICAL-BIOLOGICAL WARFARE AGENTS; WEIGHT: 4 OZ; INSTALLATION: CARRIED BY GROUND CREW A; Color: GREEN, CAMOUFLAGE, US ARMY, 483 AND SAND, DESERT OUTSIDE; Special Features: USE BY EXPLOSIVE ORDINANCE PERSONNEL IN CONJUNCTION WITH THE MCU-2/P SERIES GAS MASK IN A CHEMICAL/BIOLOGICAL AGENT ENVIRONMENT. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4240-01-338-1647 has DEMIL Code F. 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.