The Ring,retaining, cataloged under National Stock Number 5325-00-478-2745, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-478-2745 |
| Primary Part Number | 2578843-001A |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Material Diameter | 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-W-423, COMP 302, COND B FED SPEC 1ST MATERIAL RESPONSE AND QQ-W-423, COMP 304, COND B FED SPEC 2ND MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 4.450 INCHES MINIMUM AND 4.510 INCHES MAXIMUM IN |
| Inside Diameter | 4.072 INCHES MINIMUM AND 4.140 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 302 OR STEEL COMP 304 |
| 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 |
|---|---|
| 2578843-001A PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2578843-001A | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 2578843-001A | 3/9 Design control — primary reference Goodrich Corp Dba Goodrich Corp |
| 2578843-001A | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
NSN 5325-00-478-2745 is a Ring,retaining, manufactured by Goodrich Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-478-2745 has 1 manufacturer part number on file: 2578843-001A (Goodrich Corporation).
Key specifications for 2578843-001A: Usage Design: EXTERNAL; End Style: 90 DEGREE PARALLEL; Material Diameter: 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN; Material Document and Classification: QQ-W-423, COMP 302, COND B FED SPEC 1ST MATERIAL RESPONSE AND QQ-W-423, COMP 304, COND B FED SPEC 2ND MATERIAL RESPONSE. 11 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.