The Ring,wearing, cataloged under National Stock Number 4320-01-286-8638, 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 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-286-8638 |
| Primary Part Number | 2EAVS4AX1 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | PLAIN |
| Body Outside Diameter | 2.983 INCHES MINIMUM AND 2.985 INCHES MAXIMUM IN |
| Body Inside Diameter | 2.446 INCHES MINIMUM AND 2.448 INCHES MAXIMUM 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 |
|---|---|
| 2EAVS4AX1 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 215960 PIECE 17 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 2EAVS4AX1 | 3/9 Design control — primary reference U.S. Government activity |
| 215960 PIECE 17 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-01-286-8638 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-286-8638 has 2 manufacturer part numbers on file: 2EAVS4AX1 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 215960 PIECE 17 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 2EAVS4AX1: Corner Shape: SQUARE ALL CORNERS; Body Style: PLAIN; Body Outside Diameter: 2.983 INCHES MINIMUM AND 2.985 INCHES MAXIMUM IN; Overall Length: 0.688 INCHES NOMINAL IN. 4 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.