The Diver's Mask Kit, cataloged under National Stock Number 4220-01-461-6513, 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 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4220-01-461-6513 |
| Item Name | Diver's Mask Kit |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | MKII MASK OVERHAUL KIT POSITIVE PRESSURE; CONTAINS 0-RING - 8; EXHALATION DIAPHRAM - 1; DIAPHRAM - 1; VALVE HOUSING ASSY - 1; SEALING SLEEVE - 1; BALANCING DIAPHRAM - 1; VALVE CONE ASSY - 1; VALVE DISK - 2 |
| 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 |
|---|---|
| IS-MASK-KT | 3/2 Design control — primary reference U.S. Government activity |
NSN 4220-01-461-6513 is a Diver's Mask Kit, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
Key specifications for 4220-01-461-6513: General Characteristics Item Description: MKII MASK OVERHAUL KIT POSITIVE PRESSURE; CONTAINS 0-RING - 8; EXHALATION DIAPHRAM - 1; DIAPHRAM - 1; VALVE HOUSING ASSY - 1; SEALING SLEEVE - 1; BALANCING DIAPHRAM - 1; VALVE CONE ASSY - 1; VALVE DISK - 2; End Item Identification: MASK, DIVERS (FDU, ASL), 4220-21-903-1913; U S DIVERS/AQUA-LUNG. 1 specification is 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.