The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-190-4967, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Defense Maritime Solutions, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-190-4967 |
| Primary Part Number | FSD-2090/B505-48 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Defense Maritime Solutions, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | NINE PART ITEM FOR USE IN FRESH WATER OR OIL; FITS OVER SHAFT 1.625 IN. DIA. IN |
| 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 |
|---|---|
| B50548 | John Crane, Inc (USA) |
| FSD-2090/B505-48 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| FSD-2090/B505-48 | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| FSD-2090/B505-48 | 5/9 Secondary reference Wartsila Lips Inc |
| F-SD-3000FIGASZ1.625-BF171 | 5/9 Secondary reference John Crane, Inc |
| F-SD-3000TY1SZ1.625-BF171 | 5/9 Secondary reference John Crane, Inc |
| FSD3000/B505-48 | 5/9 Secondary reference Wartsila Lips Inc |
| F-SD-3000FIGASZ1.625-BF171 | 5/9 Secondary reference Wartsila Lips Inc |
| F-SD-3000, TY 1 | C/1 Advisory reference — outside the item-of-supply concept John Crane, Inc |
| F-SD-3000TY1SZ1.625-BF171 | 5/9 Secondary reference Wartsila Lips Inc |
NSN 4320-01-190-4967 is a Seal Assembly,shaft,spring Loade, manufactured by Defense Maritime Solutions, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-190-4967 has 3 manufacturer part numbers on file: B50548 (John Crane, Inc), FSD-2090/B505-48 (Defense Maritime Solutions, Inc.), FSD-2090/B505-48 (John Crane, Inc).
Key specifications for FSD-2090/B505-48: General Characteristics Item Description: NINE PART ITEM FOR USE IN FRESH WATER OR OIL; FITS OVER SHAFT 1.625 IN. DIA. IN. 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.