The Ring,wearing, cataloged under National Stock Number 4320-00-148-6796, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4320-00-148-6796 |
| Primary Part Number | 022990-00 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Groove Depth | 0.169 INCHES NOMINAL IN |
| Body Inside Diameter | 6.375 INCHES NOMINAL IN |
| Material | STEEL |
| Groove Width | 0.250 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 |
|---|---|
| 022990-00 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 022990-00 | 5/9 Secondary reference U.S. Government activity |
| Z77 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-148-6796 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-148-6796 has 1 manufacturer part number on file: 022990-00 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 022990-00: Overall Length: 3.785 INCHES NOMINAL IN; Groove Depth: 0.169 INCHES NOMINAL IN; Body Inside Diameter: 6.375 INCHES NOMINAL IN; Special Features: TWO RADIAL SLOTS ON PERIPHERY COVERING A 120 DEG ARC;ONE RADIAL SLOT ON OPPOSITE SIDE COVERING 100 DEG ARC. 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.