The O-Ring, cataloged under National Stock Number 5331-00-308-2431, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corporation Dba Eaton Inoac Div Eaton. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-308-2431 |
| Primary Part Number | 513CZ240 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Eaton Corporation Dba Eaton Inoac Div Eaton |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Outside Diameter | 4.012 INCHES NOMINAL IN |
| Center Hole Diameter | 3.719 INCHES MINIMUM AND 3.749 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 513CZ240 PRIMARY | Eaton Corporation Dba Eaton Inoac Div Eaton (USA) |
| AS568-240M1LG23652TY2 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 364-0431-474 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 364-0431-474 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| AS568-240M1LG23652TY2 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-00-308-2431 is a O-Ring, manufactured by Eaton Corporation Dba Eaton Inoac Div Eaton, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-308-2431 has 2 manufacturer part numbers on file: 513CZ240 (Eaton Corporation Dba Eaton Inoac Div Eaton), AS568-240M1LG23652TY2 (Sae International Dba Sae International).
Key specifications for 513CZ240: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Outside Diameter: 4.012 INCHES NOMINAL IN; Center Hole Diameter: 3.719 INCHES MINIMUM AND 3.749 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM. 4 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.