The Ring,wearing, cataloged under National Stock Number 4320-00-398-6902, 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 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-6902 |
| Primary Part Number | CS4320-0134 |
| 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 | 0.374 INCHES NOMINAL IN |
| Corner Shape | CHAMFERED INSIDE RIGHT CORNER |
| Body Outside Diameter | 6.368 INCHES MINIMUM AND 6.372 INCHES MAXIMUM IN |
| End to Flange Distance | 0.625 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 4.500 INCHES NOMINAL IN |
| Distance Below Centerline | 0.062 INCHES NOMINAL IN |
| Body Inside Diameter | 5.569 INCHES MINIMUM IN |
| Smallest External Anchor Flange Radius | 3.375 INCHES NOMINAL IN |
| Chamfer Angle | 30.0 DEGREES NOMINAL INSIDE RIGHT CORNER |
| Material | COPPER ALLOY |
| Largest External Anchor Flange Radius | 3.562 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 |
|---|---|
| CS4320-0134 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| 1-583HZ | 5/9 Secondary reference Siemens Energy, Inc. |
| H4320-398-6902 | 5/9 Secondary reference Naval Sea Systems Command Logistics Support Engineering Activity |
| I583HZ | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4320-00-398-6902 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 4320-00-398-6902 has 1 manufacturer part number on file: CS4320-0134 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
Key specifications for CS4320-0134: Center Flange Thickness: 0.374 INCHES NOMINAL IN; Corner Shape: CHAMFERED INSIDE RIGHT CORNER; Body Outside Diameter: 6.368 INCHES MINIMUM AND 6.372 INCHES MAXIMUM IN; End to Flange Distance: 0.625 INCHES NOMINAL IN. 11 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.