The Ring,wearing, cataloged under National Stock Number 4320-00-398-6502, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-6502 |
| Primary Part Number | CS4320-0118 |
| 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 | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Flange Diameter | 7.594 INCHES NOMINAL IN |
| Corner Shape | SQUARE ALL CORNERS |
| Internal Flange Outside Diameter | 5.561 INCHES MINIMUM AND 5.564 INCHES MAXIMUM IN |
| Body Style | INTERNAL AND EXTERNAL FLANGE |
| Internal Flange Lip Width | 0.687 INCHES NOMINAL IN |
| Body Outside Diameter | 7.250 INCHES MINIMUM AND 7.252 INCHES MAXIMUM IN |
| End to Flange Distance | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE |
| Internal Flange Inside Diameter | 5.250 INCHES NOMINAL IN |
| Body Inside Diameter | 6.372 INCHES MINIMUM AND 6.375 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 937 |
| Internal Flange Width | 0.750 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 |
|---|---|
| CS4320-0118 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| CA5870-24-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4320-00-398-6502 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 4320-00-398-6502 has 1 manufacturer part number on file: CS4320-0118 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
Key specifications for CS4320-0118: Center Flange Thickness: 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Surface Finish: 125.0 MICROINCHES ALL SURFACES; Flange Diameter: 7.594 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS. 14 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.