The Ring,wearing, cataloged under National Stock Number 4320-01-034-1290, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-034-1290 |
| Primary Part Number | 654B0246C051A |
| 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 OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Distance Between Flanges | 0.625 INCHES NOMINAL IN |
| Corner Radius | 0.188 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE |
| Distance From End | 0.312 INCHES NOMINAL IN |
| Body Outside Diameter | 4.748 INCHES NOMINAL IN |
| End to Flange Distance | 0.812 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 3.260 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.183 INCHES NOMINAL IN |
| Body Inside Diameter | 4.200 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.200 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 1.629 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Internal Flange Width | 0.204 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 2.562 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 |
|---|---|
| 999R0336PC39 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 654B0246C051A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 4320-01-034-1290 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-034-1290 has 2 manufacturer part numbers on file: 999R0336PC39 (Circor Naval Solutions Llc Dba Warren Pumps), 654B0246C051A (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 654B0246C051A: Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER; Corner Shape: ROUND INSIDE RIGHT CORNER. 18 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.