The O-Ring, cataloged under National Stock Number 5331-00-493-8258, 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 7 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-493-8258 |
| Primary Part Number | MS9386-338 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Temp Rating | -85.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Outside Diameter | 3.520 INCHES NOMINAL IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 125 MAXIMUM |
| Center Hole Diameter | 3.085 INCHES MINIMUM AND 3.115 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| MS9386-338 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 2-338 S355-75 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| A-338TH1167 | 5/9 Secondary reference U.S. Government activity |
| 338-11737 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| MS9386-338 | 5/9 Secondary reference U.S. Government activity |
| AS9386 | 5/9 Secondary reference Sae International Dba Sae International |
| SAE-AS9386 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS9386-338 | 5/9 Secondary reference U.S. Government activity |
| PRP338-11737 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| AS9386 | 5/9 Secondary reference U.S. Government activity |
| MS9386-338ES | 5/9 Secondary reference Eriks B.v. |
NSN 5331-00-493-8258 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-493-8258 has 1 manufacturer part number on file: MS9386-338 (Sae International Dba Sae International).
4 possible matches (shared part number, not a government interchangeability claim): 5331-01-199-0265, 5331-01-220-3490, 5331-01-354-0239. Verify interchangeability with system specifications before substitution.
Key specifications for MS9386-338: Temp Rating: -85.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Outside Diameter: 3.520 INCHES NOMINAL IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL. 7 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.