The Ring,retaining, cataloged under National Stock Number 5325-01-181-8389, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-181-8389 |
| Primary Part Number | HS3032KRA748 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Supplementary Features | FREE DIAMETER: 7.734" NOMINAL; THICKNESS: 0.086" NOMINAL; RADIAL WALL: 0.312"; GROOVE DIAMETER: 7.672"; GROOVE WIDTH: 0.094"; NOMINAL GROOVE DEPTH: 0.096" |
| Criticality Code Justification | FEAT |
| Outside Diameter | 7.480 INCHES NOMINAL IN |
| Surface Treatment | OIL |
| Material | STEEL COMP 1070 OR STEEL COMP 1090 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| HS3032KRA748 PRIMARY | The Boeing Company (USA) |
| HS3032KRA748 | Smalley Steel Ring Co. (USA) |
| Reference | Meaning |
|---|---|
| KR-748 | D/9 Drawing number reference only U.S. Government activity |
| HS3032KRA748 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5325-01-181-8389 is a Ring,retaining, manufactured by The Boeing Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-181-8389 has 2 manufacturer part numbers on file: HS3032KRA748 (The Boeing Company), HS3032KRA748 (Smalley Steel Ring Co.).
Key specifications for HS3032KRA748: Supplementary Features: FREE DIAMETER: 7.734" NOMINAL; THICKNESS: 0.086" NOMINAL; RADIAL WALL: 0.312"; GROOVE DIAMETER: 7.672"; GROOVE WIDTH: 0.094"; NOMINAL GROOVE DEPTH: 0.096"; Criticality Code Justification: FEAT; Overall Width: 0.094 INCHES NOMINAL IN; Outside Diameter: 7.480 INCHES NOMINAL IN. 5 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.