The Mask,air Line, cataloged under National Stock Number 4240-01-251-9403, 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 North Safety Products L.l.c. Dba North Safety Products. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-251-9403 |
| Primary Part Number | CF 2401 |
| Item Name | Mask,air Line |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | North Safety Products L.l.c. Dba North Safety Products |
| 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 |
|---|---|
| CF 2401 PRIMARY | North Safety Products L.l.c. Dba North Safety Products (USA) |
| Reference | Meaning |
|---|---|
| CF2000/7600-8A | 5/9 Secondary reference Siebe North Inc North Safety Equipment Div |
| 85200 SERIES | 5/9 Secondary reference Siebe North Inc North Safety Equipment Div |
| TC-19C-110 | 5/9 Secondary reference National Institute of Occupational Safety and Health |
| DGSCV-93-030-1 | D/9 Drawing number reference only Dla Aviation Engineering Div Department of Defense |
NSN 4240-01-251-9403 is a Mask,air Line, manufactured by North Safety Products L.l.c. Dba North Safety Products, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-251-9403 has 1 manufacturer part number on file: CF 2401 (North Safety Products L.l.c. Dba North Safety Products).
Key specifications for CF 2401: Criticality Code Justification: FEAT; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; CONSISTS OF THE FOLLOWING ITEMS: NORTH SAFETY EQUIPMENT (CAGE 79250) PART NUMBERS: 85201 FACEPIECE ASSY 1, 88600ST SNAP TITE QUICK DISCONNECT COUPLER 1, 886100 3/8 IN. AIR HOSE, 100 FT LG 1, 88600H HANSEN NIPPLE 1, RCL-4 CAPLUGS 2 IN. 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.