The O-Ring, cataloged under National Stock Number 5331-00-789-8409, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-789-8409 |
| Primary Part Number | 1HB7 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| 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 |
|---|---|
| 1HB7 PRIMARY | Oshkosh Defense Llc (USA) |
| 22021-10 PRIMARY | Danfoss Power Solutions II, Llc (USA) |
| Reference | Meaning |
|---|---|
| 19713P11 | 5/9 Secondary reference Taylor Machine Works Inc |
| 22021-10 | 5/9 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| 22021-10 | 5/9 Secondary reference Danfoss Power Solutions II, Llc |
| 22021-10 | 5/9 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 |
NSN 5331-00-789-8409 is a O-Ring, manufactured by Oshkosh Defense Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-789-8409 has 2 manufacturer part numbers on file: 1HB7 (Oshkosh Defense Llc), 22021-10 (Danfoss Power Solutions II, Llc).
Key specifications for 1HB7: Part Name Assigned by Controlling Agency: RING,BACKUP. 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.