The O-Ring, cataloged under National Stock Number 5331-01-321-7188, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-321-7188 |
| Primary Part Number | STSV047AN021 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 0.926 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| STSV047AN021 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| SV799335 FIND 9CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| STSV047AN021 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| STSV047AN021 | 5/2 Secondary reference U.S. Government activity |
| STSV047AN021CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| STSV047AN021 | 3/1 Design control — primary reference Parker-Hannifin Corp Div O-Ring Division |
| SV799335 FIND 9 | 5/1 Secondary reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
NSN 5331-01-321-7188 is a O-Ring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-321-7188 has 2 manufacturer part numbers on file: STSV047AN021 (Hamilton Sundstrand Corporation Dba Collins Aerospace), SV799335 FIND 9CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for STSV047AN021: Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Center Hole Diameter: 0.926 INCHES NOMINAL IN; End Item Identification: MANIFOLD ASSY 1A (OXYGEN) OGP; W/S: SEAWOLF CLASS SSN; SUBMARINE ATMOSPHERE CONTROL AND COMPRESSED AIR/GAS; OXYGEN GENERATION PLANT A. 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.