The Ring,wearing, cataloged under National Stock Number 4320-00-398-5481, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-5481 |
| Primary Part Number | 4320-398-5481 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Center Flange Thickness | 0.240 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | EXTERNAL LOCKING FLANGE |
| Body Outside Diameter | 5.499 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN |
| End to Flange Distance | 0.500 INCHES NOMINAL IN |
| Distance Below Centerline | 0.062 INCHES NOMINAL IN |
| Body Inside Diameter | 4.985 INCHES MINIMUM AND 4.986 INCHES MAXIMUM IN |
| Smallest External Anchor Flange Radius | 2.844 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Largest External Anchor Flange Radius | 3.000 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 |
|---|---|
| 4320-398-5481 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 08-924-691-00-003 | 5/9 Secondary reference U.S. Government activity |
| H4320-398-5481 | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 08-984-691-00-003 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-398-5481 is a Ring,wearing, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-398-5481 has 1 manufacturer part number on file: 4320-398-5481 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 4320-398-5481: Center Flange Thickness: 0.240 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN; Corner Shape: SQUARE ALL CORNERS; Body Style: EXTERNAL LOCKING FLANGE; Body Outside Diameter: 5.499 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN. 10 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.