The Ring,retaining, cataloged under National Stock Number 5325-01-188-6718, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. 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 | 5325-01-188-6718 |
| Primary Part Number | 3903-038 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Surface Treatment Document and Classification | SP-229 FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE |
| Material Document and Classification | AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.537 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN |
| Major Thickness | 0.034 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Inside Diameter | 0.469 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | HOOKED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 631 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 3903-038 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
NSN 5325-01-188-6718 is a Ring,retaining, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-188-6718 has 1 manufacturer part number on file: 3903-038 (Woodward, Inc. Div Fuel Systems and Controls).
Key specifications for 3903-038: Usage Design: INTERNAL; Surface Treatment Document and Classification: SP-229 FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE; Material Document and Classification: AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 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.
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.