The Ring,wearing, cataloged under National Stock Number 4320-00-398-8022, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-8022 |
| Primary Part Number | SL4234PC83 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | CHAMFERED OUTSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Distance Between Flanges | 0.503 INCHES NOMINAL IN |
| Corner Radius | 0.250 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Chamfer Length | 0.219 INCHES NOMINAL OUTSIDE LEFT CORNER IN |
| Internal Flange Outside Diameter | 0.438 INCHES NOMINAL IN |
| Body Style | INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE |
| Internal Flange Lip Width | 0.438 INCHES NOMINAL IN |
| Distance From End | 0.312 INCHES NOMINAL IN |
| Body Outside Diameter | 4.999 INCHES NOMINAL IN |
| End to Flange Distance | 0.750 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-390,ALLOY C91000 FED SPEC SINGLE MATERIAL RESPONSE |
| Internal Flange Inside Diameter | 3.500 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.188 INCHES NOMINAL IN |
| Distance Below Centerline | 0.031 INCHES NOMINAL IN |
| Body Inside Diameter | 4.220 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.250 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 2.438 INCHES NOMINAL IN |
| Chamfer Angle | 22.5 DEGREES NOMINAL OUTSIDE LEFT CORNER |
| Material | COPPER ALLOY |
| Internal Flange Width | 0.750 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 2.719 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 |
|---|---|
| 4670P | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| CS4320-0182 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| SL4234PC83 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| SL5672PC83 | 5/9 Secondary reference U.S. Government activity |
| SL4736PC83 | 5/9 Secondary reference U.S. Government activity |
| SL5602PC83 | 5/9 Secondary reference U.S. Government activity |
| SL5608PC83 | 5/9 Secondary reference U.S. Government activity |
| SL4234PC83 | 3/9 Design control — primary reference U.S. Government activity |
| SL4232PC83 | 5/9 Secondary reference U.S. Government activity |
| SL4639PC83 | 5/9 Secondary reference U.S. Government activity |
| SL5676PC83 | 5/9 Secondary reference U.S. Government activity |
| SL5612PC83 | 5/9 Secondary reference U.S. Government activity |
| SL4732PC83 | 5/9 Secondary reference U.S. Government activity |
| 125409 | 5/9 Secondary reference U.S. Government activity |
| 4670P | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-398-8022 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-398-8022 has 3 manufacturer part numbers on file: 4670P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), CS4320-0182 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), SL4234PC83 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for SL4234PC83: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER; Corner Shape: CHAMFERED OUTSIDE LEFT CORNER. 25 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.