The Ring,rotor, cataloged under National Stock Number 4320-01-086-4284, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Oshkosh Defense Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-086-4284 |
| Primary Part Number | 1VP90 |
| Item Name | Ring,rotor |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Oshkosh Defense Llc |
| 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 |
|---|---|
| 1VP90 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1VP90 | 5/9 Secondary reference Oshkosh Corp |
| 331807 | 3/9 Design control — primary reference Vickers Inc |
| 331807 | C/1 Advisory reference — outside the item-of-supply concept Eaton Aerospace, Llc Dba Jackson South |
NSN 4320-01-086-4284 is a Ring,rotor, manufactured by Oshkosh Defense Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-086-4284 has 1 manufacturer part number on file: 1VP90 (Oshkosh Defense Llc).
Key specifications for 1VP90: End Item Identification: MRAP - COMMON NSN - USED ON 2 MRAP VARIANTS AND 2 OTHER WEAPON SYSTEMS.. 0 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.