The Ring,retaining, cataloged under National Stock Number 5325-00-770-9347, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-770-9347 |
| Primary Part Number | 204-040-609-1 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUNDED CORNERS |
| Outside Diameter | 1.100 INCHES NOMINAL IN |
| Major Thickness | 0.032 INCHES NOMINAL IN |
| Inside Diameter | 1.010 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | WIRE |
| Surface Treatment | OXIDE |
| 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 |
|---|---|
| 204-040-609-1 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| 204-040-609-001 | 5/2 Secondary reference U.S. Government activity |
| 204-040-609-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-770-9347 is a Ring,retaining, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-770-9347 has 1 manufacturer part number on file: 204-040-609-1 (Leonardo Spa Helicopters Division - Production Site).
Key specifications for 204-040-609-1: Usage Design: INTERNAL; Material Document and Classification: QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: ROUNDED CORNERS; Outside Diameter: 1.100 INCHES NOMINAL IN. 10 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.