The Mask,chemical-Biological, cataloged under National Stock Number 4240-01-398-1437, 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 Interspiro Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-398-1437 |
| Primary Part Number | 93107143 |
| Item Name | Mask,chemical-Biological |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Interspiro Inc |
| Status | ACTIVE |
| Hose Quantity | 1 |
| Filter Type | CANISTER |
| Supplementary Features | C/O FACEPIECE ASSEMBLY P/N 93107142; FILTER HOSE ASSEMBLY P/N 93107134;HARNESS ASSEMBLY P/N 93107123;EXTERNALDRINKING TUBE ASSEMBLY P/N 88115054 NSN 4240-01-286-1841 |
| Quantity | 1 |
| Canister to Facepiece Attachment Method | HOSE |
| Carrying Facility | CARRYING CASE |
| Canister Carrying Harness | NOT INCLUDED |
| Protection for Which Filter Is Designed | TOXICOLOGICAL AND WAR GASES |
| Filter Replaceability | REPLACEABLE |
| Canister Manufacturer Symbol | CW |
| Particulate Filter | INCLUDED |
| 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 |
|---|---|
| 93107143 PRIMARY | Interspiro Inc (USA) |
| Reference | Meaning |
|---|---|
| 93107143 | 5/9 Secondary reference U.S. Government activity |
NSN 4240-01-398-1437 is a Mask,chemical-Biological, manufactured by Interspiro Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-398-1437 has 1 manufacturer part number on file: 93107143 (Interspiro Inc).
Key specifications for 93107143: Hose Quantity: 1; Filter Type: CANISTER; Supplementary Features: C/O FACEPIECE ASSEMBLY P/N 93107142; FILTER HOSE ASSEMBLY P/N 93107134;HARNESS ASSEMBLY P/N 93107123;EXTERNALDRINKING TUBE ASSEMBLY P/N 88115054 NSN 4240-01-286-1841; Quantity: 1. 11 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 4240-01-398-1437 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.