The Mask,diver's, cataloged under National Stock Number 4220-01-497-4570, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Akona Adventure Gear. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-497-4570 |
| Primary Part Number | AKM 550-BK |
| Item Name | Mask,diver's |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Akona Adventure Gear |
| Status | ACTIVE |
| Shape | HORSE COLLAR |
| Material | PLASTIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AKM 550-BK PRIMARY | Akona Adventure Gear (USA) |
| Reference | Meaning |
|---|---|
| AKM 550-BK | 5/9 Secondary reference Divers World Ltd |
NSN 4220-01-497-4570 is a Mask,diver's, manufactured by Akona Adventure Gear, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-497-4570 has 1 manufacturer part number on file: AKM 550-BK (Akona Adventure Gear).
Key specifications for AKM 550-BK: Shape: HORSE COLLAR; Special Features: CRYSTAL SILICONE DOUBLE FEATHERED SKIRT; SINGLE TEMPERED GLASS LENS; NOSE POCKET; ADJUSTABLE, RATCHETING BUCKLES; BLACK; Material: PLASTIC. 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.