The Ring,wearing, cataloged under National Stock Number 4320-00-398-6445, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-6445 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Center Flange Thickness | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Flange Diameter | 6.344 INCHES NOMINAL IN |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Corner Radius | 0.250 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Internal Flange Outside Diameter | 2.750 INCHES MINIMUM IN |
| Body Outside Diameter | 5.998 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN |
| End to Flange Distance | 0.312 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 2.250 INCHES NOMINAL IN |
| Body Inside Diameter | 3.512 INCHES MINIMUM AND 3.515 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 937 |
| 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 |
|---|---|
| CA6886-25-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4320-00-398-6445 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-00-398-6445: Center Flange Thickness: 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Flange Diameter: 6.344 INCHES NOMINAL IN; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER. 13 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.