The O-Ring, cataloged under National Stock Number 5331-01-117-5954, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-117-5954 |
| Primary Part Number | AS3581-345 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Temp Rating | -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Outside Diameter | 4.395 INCHES NOMINAL IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 3.947 INCHES MINIMUM AND 4.003 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 |
|---|---|
| AS3581-345 PRIMARY | Sae International Dba Sae International (USA) |
| 6V-3908 | Navantia - Propulsion Y Energia Motores - Cartagena (ESP) |
| 8HB251 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| M83248/2-345 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 6V3908 | C/1 Advisory reference — outside the item-of-supply concept Caterpillar Inc Div Caterpillar Defense |
| AS3581-345 | 3/9 Design control — primary reference U.S. Government activity |
| 5331PL1261388 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AS568-345MILG23652TY2 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS3581 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 4150-4051 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AS568-345MILG23652TY2 | 5/1 Secondary reference Sae International Dba Sae International |
| 8HB251 | 5/9 Secondary reference Oshkosh Corp |
| 9379J4278 PIECE 15 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 2-345V764-90 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| 10076119 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5331-01-117-5954 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-117-5954 has 3 manufacturer part numbers on file: AS3581-345 (Sae International Dba Sae International), 6V-3908 (Navantia - Propulsion Y Energia Motores - Cartagena), 8HB251 (Oshkosh Defense Llc).
Key specifications for AS3581-345: Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Outside Diameter: 4.395 INCHES NOMINAL IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL. 6 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.