The Ring,wearing, cataloged under National Stock Number 4320-00-792-6290, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-792-6290 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Surface Finish | 113.0 MICROINCHES INSIDE |
| Surface Finish | 113.0 MICROINCHES OUTSIDE |
| Surface Finish | 225.0 MICROINCHES LEFT FACE |
| Surface Finish | 225.0 MICROINCHES RIGHT FACE |
| Corner Shape | CHAMFERED ALL CORNERS |
| Corner Radius | 0.125 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Chamfer Length | 0.031 INCHES NOMINAL ALL CORNERS IN |
| Body Style | PLAIN |
| Body Outside Diameter | 5.605 INCHES MINIMUM AND 5.610 INCHES MAXIMUM IN |
| Unthreaded Mounting Hole Diameter | 0.266 INCHES NOMINAL IN |
| Material Document and Classification | FED STD 66,COMP 1020 FED STD SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 3.250 INCHES NOMINAL IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 4.000 INCHES NOMINAL IN |
| Chamfer Angle | 45.0 DEGREES NOMINAL ALL CORNERS |
| Countersink Angle | 32.0 DEGREES NOMINAL |
| Material | STEEL |
| 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 |
|---|---|
| 21500 | 5/2 Secondary reference U.S. Government activity |
| 13200E8854 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4320-00-792-6290 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 3020-00-939-2624, 6110-01-016-6904, 6130-01-184-9216. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-00-792-6290: Surface Finish: 113.0 MICROINCHES INSIDE; Surface Finish: 113.0 MICROINCHES OUTSIDE; Surface Finish: 225.0 MICROINCHES LEFT FACE; Surface Finish: 225.0 MICROINCHES RIGHT FACE. 17 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.