The Ring,retaining, cataloged under National Stock Number 5325-01-508-1939, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Aeronautics Division - Torino Site. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-508-1939 |
| Primary Part Number | 999-4-41376-032 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Leonardo Spa Aeronautics Division - Torino Site |
| Status | ACTIVE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.854 INCHES NOMINAL IN |
| Major Thickness | 0.049 INCHES NOMINAL IN |
| Inside Diameter | 1.772 INCHES NOMINAL IN |
| Ring Style | SPECIAL FLAT |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 999-4-41376-032 | Leonardo Spa Aeronautics Division - Torino Site (ITA) |
| Reference | Meaning |
|---|---|
| ZRM-45-S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-508-1939 is a Ring,retaining, manufactured by Leonardo Spa Aeronautics Division - Torino Site, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-508-1939 has 1 manufacturer part number on file: 999-4-41376-032 (Leonardo Spa Aeronautics Division - Torino Site).
Key specifications for 999-4-41376-032: Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 1.854 INCHES NOMINAL IN; Major Thickness: 0.049 INCHES NOMINAL IN; Inside Diameter: 1.772 INCHES NOMINAL IN. 6 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.