The Ring,wearing, cataloged under National Stock Number 4320-00-288-8635, 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 6 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-288-8635 |
| Primary Part Number | 150NT4AX2-162 |
| 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 ALL CORNERS |
| Body Style | PLAIN |
| Body Outside Diameter | 3.878 INCHES MINIMUM AND 3.880 INCHES MAXIMUM IN |
| Body Inside Diameter | 3.512 INCHES MINIMUM AND 3.514 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 150NT4AX2-162 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Y150NT4AX2 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 150NT4AX1-162-0S PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 150NT4AX1-162-0S | 5/9 Secondary reference U.S. Government activity |
| 150NT4AX2-162 | 5/9 Secondary reference U.S. Government activity |
| 150NT4AX2-162 | 5/9 Secondary reference Ingersoll Rand Co |
| Y150NT4AX2 | 5/9 Secondary reference U.S. Government activity |
| Y150NT4AX2 | 5/9 Secondary reference Ingersoll Rand Co |
| 150NT4AX1-162-0S | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4320-00-288-8635 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-288-8635 has 3 manufacturer part numbers on file: 150NT4AX2-162 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), Y150NT4AX2 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 150NT4AX1-162-0S (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 150NT4AX2-162: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Corner Shape: SQUARE ALL CORNERS; Body Style: PLAIN; Body Outside Diameter: 3.878 INCHES MINIMUM AND 3.880 INCHES MAXIMUM IN. 6 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.