The Ring,wearing, cataloged under National Stock Number 4320-00-149-2250, 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 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-149-2250 |
| Primary Part Number | 20LFV4AX5-162 |
| 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 OUTSIDE |
| 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 | 0.250 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | PLAIN |
| Body Outside Diameter | 18.744 INCHES MINIMUM AND 18.746 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 17.750 INCHES MINIMUM AND 17.753 INCHES MAXIMUM IN |
| Material | COPPER 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 |
|---|---|
| 20LFV4AX5-162 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 20LFV4AX5-162 | 5/9 Secondary reference Ingersoll Rand Co |
| 20LFV4AX5-162 | 3/9 Design control — primary reference U.S. Government activity |
| 20LFV4AX5-673 | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4320-00-149-2250 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-149-2250 has 1 manufacturer part number on file: 20LFV4AX5-162 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 20LFV4AX5-162: Surface Finish: 125.0 MICROINCHES OUTSIDE; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER. 11 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.