The Facepiece,breathing Equipment, cataloged under National Stock Number 4240-01-268-6636, 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 Honeywell Safety Products Usa, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4240-01-268-6636 |
| Primary Part Number | 311000 |
| Item Name | Facepiece,breathing Equipment |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Honeywell Safety Products Usa, Inc. |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 311000 PRIMARY | Honeywell Safety Products Usa, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 14140059 | 5/9 Secondary reference Dalloz Safety |
| 311000 | 5/9 Secondary reference Survivair Corp Sub of Comasec Inc |
| 6100S | 5/9 Secondary reference Survivair Corp Sub of Comasec Inc |
| 6100S | 5/9 Secondary reference Dalloz Safety |
| 14140059 | 5/9 Secondary reference Survivair Corp Sub of Comasec Inc |
NSN 4240-01-268-6636 is a Facepiece,breathing Equipment, manufactured by Honeywell Safety Products Usa, Inc., classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-268-6636 has 1 manufacturer part number on file: 311000 (Honeywell Safety Products Usa, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-536-0056, 6135-01-606-8179. Verify interchangeability with system specifications before substitution.
Key specifications for 311000: Criticality Code Justification: FEAT; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; DUAL CARTRIDGE; SIZE SMALL; HALF MASK; SILICONE; End Item Identification: WILLSON SAFETY PRODUCTS MODEL 6000 SERIES RESPIRATOR. 1 specification is 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 4240-01-268-6636 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.