The Mask,diver's, cataloged under National Stock Number 4220-01-663-2422, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-663-2422 |
| Item Name | Mask,diver's |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Status | ACTIVE |
| Shape | CIRCULAR |
| Material | PLASTIC AND RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| LOOK-BLK/BLK | 3/2 Design control — primary reference U.S. Government activity |
NSN 4220-01-663-2422 is a Mask,diver's, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
Key specifications for 4220-01-663-2422: Shape: CIRCULAR; Special Features: 100% HYPO-ALLERGENIC SILICONE,ALTERNATING MATT AND POLISHED ZONES ON SKIT,FRAME:MADE OF TECHNO-POLYMERS REINFORCED WITH INORGANIC FILLERS,SHOCK RESISTANCE,4MM TEMPERED GLASSES,CARDANIC JOINT BUCKLES,100% SILICONE STRAP WITH EN MM; Material: PLASTIC AND RUBBER SYNTHETIC. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.