The Ring,retaining, cataloged under National Stock Number 5325-01-688-8912, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-688-8912 |
| Primary Part Number | SPIROLOX WH-78 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Leonardo Spa Aeronautics Division - Torino Site |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Minor Thickness | 0.031 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.821 INCHES NOMINAL IN |
| Ring Style | SPIRAL |
| 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 |
|---|---|
| SPIROLOX WH-78 | Leonardo Spa Aeronautics Division - Torino Site (ITA) |
| Reference | Meaning |
|---|---|
| SPIROLOX WH-78 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-688-8912 is a Ring,retaining, manufactured by Leonardo Spa Aeronautics Division - Torino Site, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-688-8912 has 1 manufacturer part number on file: SPIROLOX WH-78 (Leonardo Spa Aeronautics Division - Torino Site).
Key specifications for SPIROLOX WH-78: Usage Design: INTERNAL; Minor Thickness: 0.031 INCHES NOMINAL IN; Cross-Sectional Shape Style: ROUND; Outside Diameter: 0.821 INCHES NOMINAL IN. 5 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.