The O-Ring, cataloged under National Stock Number 5331-01-571-1678, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sterling Hydraulics Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Sterling Hydraulics Inc (CAGE 0FHH8) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-571-1678 |
| Primary Part Number | 8024N912 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sterling Hydraulics 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 |
|---|---|
| 25KP684 | Oshkosh Defense Llc (USA) |
| 26KP684 | Oshkosh Defense Llc (USA) |
| 8024N912 PRIMARY | Sterling Hydraulics Inc (USA) |
| Reference | Meaning |
|---|---|
| 26KP684 | 5/9 Secondary reference Oshkosh Corp |
| 9DD000293 | D/9 Drawing number reference only Sterling Hydraulics Inc |
NSN 5331-01-571-1678 is a O-Ring, manufactured by Sterling Hydraulics Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-571-1678 has 3 manufacturer part numbers on file: 25KP684 (Oshkosh Defense Llc), 26KP684 (Oshkosh Defense Llc), 8024N912 (Sterling Hydraulics Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-571-3557, 5330-01-581-9894. Verify interchangeability with system specifications before substitution.
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.