The Ring,retaining, cataloged under National Stock Number 5325-01-517-5701, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Rolls Royce Corp. Government technical data includes 11 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 | 5325-01-517-5701 |
| Primary Part Number | MS16625-4165 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Rolls Royce Corp |
| Status | ACTIVE |
| Material Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| Usage Design | INTERNAL |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5520 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.810 INCHES MINIMUM AND 1.870 INCHES MAXIMUM IN |
| Major Thickness | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 632 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| MS16625-4165 PRIMARY | Rolls Royce Corp (USA) |
NSN 5325-01-517-5701 is a Ring,retaining, manufactured by Rolls Royce Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-517-5701 has 1 manufacturer part number on file: MS16625-4165 (Rolls Royce Corp).
Key specifications for MS16625-4165: Material Hardness Rating: 55.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM; Usage Design: INTERNAL; Criticality Code Justification: AGAV; Material Document and Classification: AMS 5520 ASSN STD SINGLE MATERIAL RESPONSE. 11 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.
NSN 5325-01-517-5701 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.