The O-Ring, cataloged under National Stock Number 5331-01-618-9939, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-618-9939 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Cross-Sectional Height | 0.103 INCHES NOMINAL IN |
| Material Document and Classification | NAS1613 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 1.299 INCHES NOMINAL IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NAS1611-120A | 3/2 Design control — primary reference U.S. Government activity |
| NAS1613 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5331-01-618-9939 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-618-9939: Cross-Sectional Height: 0.103 INCHES NOMINAL IN; Material Document and Classification: NAS1613 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Special Features: ITEM IS FAA CERTIFIED; Center Hole Diameter: 1.299 INCHES NOMINAL IN. 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.