The Mask,air Line, cataloged under National Stock Number 4240-01-254-9776, 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 Rhine Air, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-254-9776 |
| Primary Part Number | RA-200 |
| Item Name | Mask,air Line |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Rhine Air, Inc |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| RA-200 PRIMARY | Rhine Air, Inc (USA) |
NSN 4240-01-254-9776 is a Mask,air Line, manufactured by Rhine Air, Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-254-9776 has 1 manufacturer part number on file: RA-200 (Rhine Air, Inc).
Key specifications for RA-200: Criticality Code Justification: FEAT; Special Features: C/O ONE 100 FT LG BREATHING HOSE AND FITTINGS,FULL FACEPIECE AIRLINE RESPIRATOR,HIGH EFFICIENCY CARTRIDGES; NIOSH/MSHA CERTIFIED NO. TC-21C-360; CAN BE USED WITH ANY RHINE AIR BREATHING PUMP; SOLE SOURCE REQUIRED BY STATUTE 6.302 FT. 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.
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.