The Ring,wearing, cataloged under National Stock Number 4320-00-006-6121, 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 10 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 | 4320-00-006-6121 |
| Primary Part Number | 654B0274C051A |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Distance Between Flanges | 0.439 INCHES NOMINAL IN |
| Corner Radius | 0.375 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Distance From End | 0.438 INCHES NOMINAL IN |
| End to Flange Distance | 0.813 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 2.625 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.125 INCHES NOMINAL IN |
| Distance Below Centerline | 0.125 INCHES NOMINAL IN |
| Body Inside Diameter | 3.500 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.689 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 |
|---|---|
| 654B0274C051A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 654B0274 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 4320-00-006-6121 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-006-6121 has 2 manufacturer part numbers on file: 654B0274C051A (Circor Naval Solutions Llc Dba Warren Pumps), 654B0274 (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 654B0274C051A: Corner Shape: ROUND INSIDE RIGHT CORNER; Distance Between Flanges: 0.439 INCHES NOMINAL IN; Corner Radius: 0.375 INCHES NOMINAL INSIDE RIGHT CORNER IN; Distance From End: 0.438 INCHES NOMINAL 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.