The O-Ring, cataloged under National Stock Number 5331-00-789-6647, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Schwitzer Engine Components a Household Intl Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-789-6647 |
| Primary Part Number | C139051 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Schwitzer Engine Components a Household Intl Co |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 139051 | Schwitzer Engine Components a Household Intl Co (USA) |
| C139051 PRIMARY | Schwitzer Engine Components a Household Intl Co (USA) |
| Reference | Meaning |
|---|---|
| 4056145-8 | 5/9 Secondary reference Agco Corp Parts Opn |
| 4056145 | 5/9 Secondary reference Agco Corp Parts Opn |
NSN 5331-00-789-6647 is a O-Ring, manufactured by Schwitzer Engine Components a Household Intl Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-789-6647 has 2 manufacturer part numbers on file: 139051 (Schwitzer Engine Components a Household Intl Co), C139051 (Schwitzer Engine Components a Household Intl Co).
1 possible match (shared part number, not a government interchangeability claim): 2840-01-095-0150. Verify interchangeability with system specifications before substitution.
Key specifications for C139051: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 3 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.