The Underwear,diver's Dry Suit, cataloged under National Stock Number 4220-01-407-3656, 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 Diving Unlimited International Inc. Government technical data includes 4 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-407-3656 |
| Primary Part Number | 204103 |
| Item Name | Underwear,diver's Dry Suit |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Diving Unlimited International Inc |
| Status | ACTIVE |
| Entrance Location | BACK |
| Design Type | ONE-PIECE |
| Attached Cuffs | INCLUDED |
| Size Designation | SMALL |
| 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 |
|---|---|
| 204103 PRIMARY | Diving Unlimited International Inc (USA) |
NSN 4220-01-407-3656 is a Underwear,diver's Dry Suit, manufactured by Diving Unlimited International Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-407-3656 has 1 manufacturer part number on file: 204103 (Diving Unlimited International Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-596-0816. Verify interchangeability with system specifications before substitution.
Key specifications for 204103: Entrance Location: BACK; Design Type: ONE-PIECE; Attached Cuffs: INCLUDED; Size Designation: SMALL. 4 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.