The Ring,wearing, cataloged under National Stock Number 4320-01-533-8273, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Sims Pump Valve Co, Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-533-8273 |
| Primary Part Number | 3013016 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Sims Pump Valve Co, Inc |
| Status | ACTIVE |
| Corner Shape | CHAMFERED ALL CORNERS |
| Chamfer Length | 0.590 INCHES NOMINAL ALL CORNERS IN |
| Body Style | PLAIN |
| Body Outside Diameter | 6.305 INCHES NOMINAL IN |
| Body Inside Diameter | 5.715 INCHES NOMINAL IN |
| Chamfer Angle | 5.0 DEGREES NOMINAL ALL CORNERS |
| Material | CARBON GRAPHITE AND PLASTIC PHENOLIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4320-01-533-8273 is a Ring,wearing, manufactured by Sims Pump Valve Co, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-533-8273 has 2 manufacturer part numbers on file: 3013016 (Sims Pump Valve Co, Inc), 3013016 (Maritech, Marinetechnik).
1 possible match (shared part number, not a government interchangeability claim): 4520-01-724-7818. Verify interchangeability with system specifications before substitution.
Key specifications for 3013016: Corner Shape: CHAMFERED ALL CORNERS; Chamfer Length: 0.590 INCHES NOMINAL ALL CORNERS IN; Body Style: PLAIN; Body Outside Diameter: 6.305 INCHES NOMINAL IN. 7 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.