The Ring,retaining, cataloged under National Stock Number 5325-01-559-4631, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-559-4631 |
| Primary Part Number | VH350CD |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Outside Diameter | 3.630 INCHES NOMINAL IN |
| Inside Diameter | 35.500 INCHES NOMINAL IN |
| Ring Style | SPECIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-01-559-4631 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-559-4631 has 2 manufacturer part numbers on file: VH350CD (Leonardo Spa Aeronautics Division - Torino Site), VH350CD (Smalley Steel Ring Co.).
Key specifications for VH350CD: Outside Diameter: 3.630 INCHES NOMINAL IN; Inside Diameter: 35.500 INCHES NOMINAL IN; Ring Style: SPECIAL; Special Features: INTERNAL RING. GROOVE DIAMETER 3.592 INCHES. MIN GROOVE WIDTH 0.044 INCH, RING THICKNESS 0.039 INCH, RING RADIAL WALL 0.188 INCHES. NUMBER OF TURNS 1. RING SHEAR 18,010.0 LBS, GROOVE YIELD 11,380.0 LBS LBS. 3 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.