The Cartridge,compressed Gas, cataloged under National Stock Number 4220-01-228-5646, 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 Leland Limited Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-228-5646 |
| Primary Part Number | 84121Z-0034 |
| Item Name | Cartridge,compressed Gas |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Leland Limited Inc |
| Status | ACTIVE |
| Nominal Thread Size | 0.375 INCHES IN |
| Capacity | 25.0 GRAMS NOMINAL G |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 84121Z-0034 PRIMARY | Leland Limited Inc (USA) |
| Reference | Meaning |
|---|---|
| 84121 | 5/9 Secondary reference Leland Limited Inc |
| 84121Z | 5/9 Secondary reference Leland Limited Inc |
| LP-325 25GRAM | 7/9 Vendor item drawing reference Mar-Vel International, Inc. Dba Mar-Vel Underwater Equip |
NSN 4220-01-228-5646 is a Cartridge,compressed Gas, manufactured by Leland Limited Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-228-5646 has 1 manufacturer part number on file: 84121Z-0034 (Leland Limited Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4810-01-394-3904, 5330-01-542-2579, 4220-01-545-9863. Verify interchangeability with system specifications before substitution.
Key specifications for 84121Z-0034: Nominal Thread Size: 0.375 INCHES IN; Capacity: 25.0 GRAMS NOMINAL G; Special Features: CARBON DIOXIDE; Thread Series Designator: UNF. 3 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.