The Ring,retaining, cataloged under National Stock Number 5325-00-030-9075, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-030-9075 |
| Primary Part Number | F78-4 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Bae Systems Information and Electronic Systems Integration Inc. |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.020 INCHES NOMINAL IN |
| Inside Diameter | 0.187 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Ring Style | E |
| Material | STEEL |
| 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 |
|---|---|
| F78-4 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
| Reference | Meaning |
|---|---|
| F78-4 | 5/9 Secondary reference Bosch Security Systems, Llc |
NSN 5325-00-030-9075 is a Ring,retaining, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-030-9075 has 1 manufacturer part number on file: F78-4 (Bae Systems Information and Electronic Systems Integration Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5961-00-465-8187. Verify interchangeability with system specifications before substitution.
Key specifications for F78-4: Usage Design: EXTERNAL; Cross-Sectional Shape Style: RECTANGULAR; Major Thickness: 0.020 INCHES NOMINAL IN; Inside Diameter: 0.187 INCHES NOMINAL IN. 7 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.