The Insert,breathing Tube, cataloged under National Stock Number 4240-01-386-6883, 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 Mine Safety Appliances Company. 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 | 4240-01-386-6883 |
| Primary Part Number | 476899 |
| Item Name | Insert,breathing Tube |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 476899 PRIMARY | Mine Safety Appliances Company (USA) |
NSN 4240-01-386-6883 is a Insert,breathing Tube, manufactured by Mine Safety Appliances Company, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-386-6883 has 1 manufacturer part number on file: 476899 (Mine Safety Appliances Company).
Key specifications for 476899: Special Features: COMPONENT OF NIOSH APPROVAL TC-13F-138 END ITEM "ULTRALITE II PRESSURE DEMAND AIR MASK". COMPLIES WITH NFPA-1981, 1992 EDITION. 0 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.
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.