The Ring,wearing, cataloged under National Stock Number 4320-00-077-0583, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 20 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 | 4320-00-077-0583 |
| Primary Part Number | CS-4320-0426 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Center Flange Thickness | 1.469 INCHES NOMINAL IN |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | CHAMFERED INSIDE RIGHT CORNER |
| Chamfer Length | 0.985 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | GROOVED W/EXTERNAL LOCKING FLANGE |
| Body Outside Diameter | 21.625 INCHES NOMINAL IN |
| End to Flange Distance | 1.594 INCHES NOMINAL IN |
| Groove Depth | 1.297 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 19.031 INCHES NOMINAL IN |
| Distance From End to Groove Center | 3.220 INCHES NOMINAL IN |
| Body Inside Diameter | 19.875 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 10.685 INCHES NOMINAL IN |
| Anchor Groove Width | 2.625 INCHES NOMINAL IN |
| Chamfer Angle | 35.0 DEGREES NOMINAL INSIDE RIGHT CORNER |
| Material | COPPER ALLOY |
| Internal Flange Width | 1.594 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 10.813 INCHES NOMINAL IN |
| Groove Width | 0.313 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 |
|---|---|
| CS-4320-0426 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| 682H0025C041A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 4320-00-077-0583 is a Ring,wearing, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-077-0583 has 2 manufacturer part numbers on file: CS-4320-0426 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), 682H0025C041A (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for CS-4320-0426: Center Flange Thickness: 1.469 INCHES NOMINAL IN; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER. 20 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.