The Insert,screw Thread, cataloged under National Stock Number 5325-01-079-6978, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Leonardo S.p.a. Div Electronics. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-079-6978 |
| Primary Part Number | 311489-1 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Leonardo S.p.a. Div Electronics |
| Status | ACTIVE |
| Width Across Flats | 0.620 INCHES NOMINAL IN |
| Length | 0.400 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Thickness | 0.120 INCHES NOMINAL IN |
| Insert Size | 0.438-20 UNF 2A A |
| Style Designator | FLANGE |
| Material Document and Classification | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.312 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303 OVERALL |
| 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 |
|---|---|
| 311489-1 | Leonardo S.p.a. Div Electronics (ITA) |
| Reference | Meaning |
|---|---|
| 311489-1 | 5/9 Secondary reference Fiar Fabbrica Italiana Apparecchiature Radioelettriche Spa |
| 311489-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-079-6978 is a Insert,screw Thread, manufactured by Leonardo S.p.a. Div Electronics, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-079-6978 has 1 manufacturer part number on file: 311489-1 (Leonardo S.p.a. Div Electronics).
Key specifications for 311489-1: Width Across Flats: 0.620 INCHES NOMINAL IN; Length: 0.400 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Thickness: 0.120 INCHES NOMINAL IN. 10 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.