The Ring,connecting,round, cataloged under National Stock Number 5365-01-047-8721, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5365-01-047-8721 |
| Primary Part Number | 2580223 |
| Item Name | Ring,connecting,round |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Stock Size | 0.438 IN. DIA IN |
| Inside Diameter | 2.500 INCHES NOMINAL IN |
| Surface Treatment | ZINC |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 2580223 | The Crosby Group Llc Dba the Crosby Group (USA) |
| Reference | Meaning |
|---|---|
| 2580223 | 5/2 Secondary reference U.S. Government activity |
| 2580223 | 3/2 Design control — primary reference U.S. Government activity |
| 2580223 | 5/9 Secondary reference Ball a C Co |
| 2580223 | 5/9 Secondary reference Acco Babcock Inc American Chain Div |
NSN 5365-01-047-8721 is a Ring,connecting,round, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-047-8721 has 1 manufacturer part number on file: 2580223 (The Crosby Group Llc Dba the Crosby Group).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-545-9571. Verify interchangeability with system specifications before substitution.
Key specifications for 2580223: Stock Size: 0.438 IN. DIA IN; Inside Diameter: 2.500 INCHES NOMINAL IN; Surface Treatment: ZINC; Material: STEEL. 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.