The Helmet,deep-Sea Diver's, cataloged under National Stock Number 4220-01-152-9275, 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 Morse Diving, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4220-01-152-9275 |
| Primary Part Number | 9900-00 |
| Item Name | Helmet,deep-Sea Diver's |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Morse Diving, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | SURFACE SUPPORTED DIVING HELMET FURNISHED WITH MICROPHONE CABLE ASSEMBLY;AIR SUPPLY VALVE ASSEMBLY;EARPHONE CALBE ASSEMBLY;HELMET LINER ASSEMBLY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9900-00 PRIMARY | Morse Diving, Inc. (USA) |
| 9900-00 MK 12 SSDS | Morse Diving, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 592-4758500 | D/9 Drawing number reference only U.S. Government activity |
NSN 4220-01-152-9275 is a Helmet,deep-Sea Diver's, manufactured by Morse Diving, Inc., classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-152-9275 has 2 manufacturer part numbers on file: 9900-00 (Morse Diving, Inc.), 9900-00 MK 12 SSDS (Morse Diving, Inc.).
Key specifications for 9900-00: General Characteristics Item Description: SURFACE SUPPORTED DIVING HELMET FURNISHED WITH MICROPHONE CABLE ASSEMBLY;AIR SUPPLY VALVE ASSEMBLY;EARPHONE CALBE ASSEMBLY;HELMET LINER ASSEMBLY. 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.
NSN 4220-01-152-9275 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.