The O-Ring, cataloged under National Stock Number 5331-01-204-8587, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-204-8587 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Cross-Sectional Height | 0.062 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 0.750 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| AV198-949 ITEM 21 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| AV182-201 PC 21 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| AV182-201ITEM21 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| GV39-619-6-70 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| GV39-619-6-70 | 3/9 Design control — primary reference Asco Valve Manufacturing, Llc |
| AV198-949PC21 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| 39-619-70 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
| AV168-741 PC24 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
NSN 5331-01-204-8587 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-204-8587: Cross-Sectional Height: 0.062 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Center Hole Diameter: 0.750 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC. 5 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.