The Ring,wearing, cataloged under National Stock Number 4320-01-033-2121, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-033-2121 |
| Primary Part Number | 5032954,PC.9 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Center Flange Thickness | 0.245 INCHES NOMINAL IN |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | EXTERNAL LOCKING FLANGE |
| Body Outside Diameter | 8.374 INCHES NOMINAL IN |
| End to Flange Distance | 0.625 INCHES NOMINAL IN |
| Groove Depth | 0.173 INCHES NOMINAL IN |
| Distance Below Centerline | 0.062 INCHES NOMINAL IN |
| Body Inside Diameter | 7.875 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 4.281 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Largest External Anchor Flange Radius | 4.438 INCHES NOMINAL IN |
| Groove Width | 0.187 INCHES NOMINAL IN |
| 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 |
|---|---|
| 5032954,PC.9 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 506-5032954REVB | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 506-5032954REVBPC9 | 5/9 Secondary reference Naval Sea Systems Command |
| 506-5032954REVBPC9 | 3/2 Design control — primary reference U.S. Government activity |
| 506-5032954 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4320-01-033-2121 is a Ring,wearing, manufactured by Naval Sea Systems Command, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-033-2121 has 1 manufacturer part number on file: 5032954,PC.9 (Naval Sea Systems Command).
Key specifications for 5032954,PC.9: Center Flange Thickness: 0.245 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Body Style: EXTERNAL LOCKING FLANGE; Body Outside Diameter: 8.374 INCHES NOMINAL IN. 12 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.