The Ring,wearing, cataloged under National Stock Number 4320-00-528-2755, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-528-2755 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES INSIDE |
| Surface Finish | 250.0 MICROINCHES LEFT FACE |
| Surface Finish | 250.0 MICROINCHES OUTSIDE |
| Surface Finish | 250.0 MICROINCHES RIGHT FACE |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | CHAMFERED INSIDE RIGHT CORNER |
| Chamfer Length | 0.188 INCHES NOMINAL ALL CORNERS IN |
| Body Style | PLAIN |
| Body Outside Diameter | 3.900 INCHES NOMINAL IN |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 3.500 INCHES NOMINAL IN |
| Chamfer Angle | 45.0 DEGREES NOMINAL ALL CORNERS |
| 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 |
| Reference | Meaning |
|---|---|
| APS-16100955 | 5/9 Secondary reference Bratwear Inc Div Alpha Parts & Supply, Inc |
| CA603ADH53PIECE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| ADH5953A | 5/9 Secondary reference U.S. Government activity |
| 16100955 | 3/9 Design control — primary reference U.S. Government activity |
| 16100955 | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
NSN 4320-00-528-2755 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-00-528-2755: Surface Finish: 63.0 MICROINCHES INSIDE; Surface Finish: 250.0 MICROINCHES LEFT FACE; Surface Finish: 250.0 MICROINCHES OUTSIDE; Surface Finish: 250.0 MICROINCHES RIGHT FACE. 15 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.