The O-Ring, cataloged under National Stock Number 5331-00-021-3774, 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 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-021-3774 |
| Primary Part Number | AS568-137/M2BE710814B14E014E034F |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Outside Diameter | 2.256 INCHES NOMINAL IN |
| Center Hole Diameter | 2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| AS568-137/M2BE710814B14E014E034F PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| C0147 2-137 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| AS568-137 | 5/9 Secondary reference U.S. Government activity |
| ASTM D2000-M2BE710814B14E014E034 | 5/1 Secondary reference U.S. Government activity |
| AS568-137 | 5/1 Secondary reference Sae International Dba Sae International |
| 2-137C147-7 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| AS568-137/M2BE710814B14E014E034F | 3/9 Design control — primary reference U.S. Government activity |
| 2-137C873-70 | 5/9 Secondary reference Dolly Mfg Corp |
NSN 5331-00-021-3774 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-021-3774 has 1 manufacturer part number on file: AS568-137/M2BE710814B14E014E034F (Sae International Dba Sae International).
3 possible matches (shared part number, not a government interchangeability claim): 5331-00-482-4461, 5331-01-024-9772, 5331-01-674-5286. Verify interchangeability with system specifications before substitution.
Key specifications for AS568-137/M2BE710814B14E014E034F: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Outside Diameter: 2.256 INCHES NOMINAL IN; Center Hole Diameter: 2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN; Material: RUBBER CHLOROPRENE CLASS CR. 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.