The Ring,retaining, cataloged under National Stock Number 5325-01-435-4726, 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 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-435-4726 |
| Primary Part Number | RRT300CD |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Material Document and Classification | AISI 1070 ASSN STD 1ST MATERIAL RESPONSE AND AISI 1090 ASSN STD 2ND MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 3.188 INCHES NOMINAL IN |
| Major Thickness | 0.093 INCHES NOMINAL IN |
| Inside Diameter | 3.000 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | CADMIUM AND DICHROMATE |
| Material | STEEL COMP 1070 AND 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 | X |
| Part Number | Manufacturer |
|---|---|
| RRT300CD PRIMARY | The Boeing Company (USA) |
NSN 5325-01-435-4726 is a Ring,retaining, manufactured by The Boeing Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-435-4726 has 1 manufacturer part number on file: RRT300CD (The Boeing Company).
Key specifications for RRT300CD: Usage Design: INTERNAL; Material Document and Classification: AISI 1070 ASSN STD 1ST MATERIAL RESPONSE AND AISI 1090 ASSN STD 2ND MATERIAL RESPONSE; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 3.188 INCHES NOMINAL IN. 9 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.