The Ring,wearing, cataloged under National Stock Number 4320-00-978-7141, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-978-7141 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Surface Finish | 113.0 MICROINCHES ALL SURFACES |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | PLAIN |
| Body Outside Diameter | 4.748 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN |
| Body Inside Diameter | 4.374 INCHES MINIMUM AND 4.375 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 |
| Reference | Meaning |
|---|---|
| CA11313 | 5/1 Secondary reference U.S. Government activity |
| CA8795-7 | 3/2 Design control — primary reference U.S. Government activity |
| CA11313-4-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4320-00-978-7141 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4320-00-978-7143, 4320-01-181-1969, 4320-01-181-3605. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-00-978-7141: Surface Finish: 113.0 MICROINCHES ALL SURFACES; Corner Shape: SQUARE ALL CORNERS; Body Style: PLAIN; Body Outside Diameter: 4.748 INCHES MINIMUM AND 4.750 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.