The Band,top,divers Mask, cataloged under National Stock Number 4220-01-041-3170, 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 Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-041-3170 |
| Primary Part Number | 4666805 |
| Item Name | Band,top,divers Mask |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | BAND MATL BRASS ASTM B19 1/2 HARD,BLOCK MATL BRASS ASTM B16-66 1/2 HARD,STUD MATL BRASS ASTM B16-66 1/2 HARD |
| 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 |
|---|---|
| 4666805 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4666805 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4220-01-041-3170 is a Band,top,divers Mask, manufactured by Naval Sea Systems Command, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-041-3170 has 1 manufacturer part number on file: 4666805 (Naval Sea Systems Command).
Key specifications for 4666805: General Characteristics Item Description: BAND MATL BRASS ASTM B19 1/2 HARD,BLOCK MATL BRASS ASTM B16-66 1/2 HARD,STUD MATL BRASS ASTM B16-66 1/2 HARD; End Item Identification: DIVERS MASK USN MARK 1 MODEL O. 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.