The Ring,wearing, cataloged under National Stock Number 4320-01-391-3302, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-391-3302 |
| Primary Part Number | 654B0247C051A |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Distance Between Flanges | 0.430 INCHES NOMINAL IN |
| Body Style | INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE |
| Distance From End | 0.438 INCHES NOMINAL IN |
| Body Outside Diameter | 4.438 INCHES NOMINAL IN |
| End to Flange Distance | 0.875 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 2.625 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.375 INCHES NOMINAL IN |
| Distance Below Centerline | 0.125 INCHES NOMINAL IN |
| Body Inside Diameter | 3.000 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.375 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 1.938 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Internal Flange Width | 0.250 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 2.219 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 |
|---|---|
| 654B0247C051A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 654B0247C051 | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| 654B0247 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-391-3302 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-391-3302 has 1 manufacturer part number on file: 654B0247C051A (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 654B0247C051A: Corner Shape: SQUARE ALL CORNERS; Distance Between Flanges: 0.430 INCHES NOMINAL IN; Body Style: INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE; Distance From End: 0.438 INCHES NOMINAL IN. 15 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.