The Ring,wearing, cataloged under National Stock Number 4320-01-440-5800, 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.. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Ring,wearing |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | John Crane, Inc (CAGE 71724); Defense Maritime Solutions, Inc. (CAGE 0EYA6) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-440-5800 |
| Primary Part Number | A3736250019237 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Defense Maritime Solutions, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| NSP-00309-1B ITEM 1,3 | John Crane, Inc (USA) |
| A3736250019237 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| A37-3625-011 NO.1,3 | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| A37-3625-001-9237 | 5/9 Secondary reference John Crane, Inc |
NSN 4320-01-440-5800 is a Ring,wearing, manufactured by Defense Maritime Solutions, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-440-5800 has 3 manufacturer part numbers on file: NSP-00309-1B ITEM 1,3 (John Crane, Inc), A3736250019237 (Defense Maritime Solutions, Inc.), A37-3625-011 NO.1,3 (John Crane, Inc).
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.