The Ring,wearing, cataloged under National Stock Number 4320-00-447-0107, 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 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4320-00-447-0107 |
| Primary Part Number | 3A1477AB6 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Center Flange Thickness | 0.250 INCHES NOMINAL IN |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Corner Radius | 0.500 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | EXTERNAL LOCKING FLANGE |
| Body Outside Diameter | 6.000 INCHES NOMINAL IN |
| End to Flange Distance | 0.688 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 4.875 INCHES NOMINAL IN |
| Distance Below Centerline | 0.062 INCHES NOMINAL IN |
| Body Inside Diameter | 5.344 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 3.156 INCHES NOMINAL IN |
| Material | STEEL |
| Internal Flange Width | 0.500 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 3.344 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 |
|---|---|
| 3A1477AB6 | Toolex, Inc Dba Toolex Inc (USA) |
| 3F4903PC5-1 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 3A1477AB6 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 3F4903PC5-1 | Toolex, Inc Dba Toolex Inc (USA) |
| Reference | Meaning |
|---|---|
| 2A14777AB6 | 5/9 Secondary reference Rotary Products Inc |
| CS4320-0361 | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| 3F4903 PIECE 5 | 5/9 Secondary reference Kline Manufacturing Co Inc |
NSN 4320-00-447-0107 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-447-0107 has 4 manufacturer part numbers on file: 3A1477AB6 (Toolex, Inc Dba Toolex Inc), 3F4903PC5-1 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 3A1477AB6 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 3F4903PC5-1 (Toolex, Inc Dba Toolex Inc).
Key specifications for 3A1477AB6: Center Flange Thickness: 0.250 INCHES NOMINAL IN; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER. 16 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.