The Insert,panel Fastener, cataloged under National Stock Number 5325-00-122-7299, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-00-122-7299 |
| Primary Part Number | 663D4-75-80 |
| Item Name | Insert,panel Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Flange Diameter | 0.687 INCHES NOMINAL0.687 INCHES NOMINAL IN |
| Sleeve Diameter | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Insert Style | PROTRUDING FLANGEPROTRUDING FLANGE |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Size and Series/type Designator | 0.250-28 UNF |
| Hole Type | THREADEDTHREADED |
| Flange Thickness | 0.023 INCHES NOMINAL0.023 INCHES NOMINAL IN |
| 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 |
|---|---|
| 663D4-75-80 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| G355675-3 | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
NSN 5325-00-122-7299 is a Insert,panel Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-122-7299 has 1 manufacturer part number on file: 663D4-75-80 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for 663D4-75-80: Flange Diameter: 0.687 INCHES NOMINAL0.687 INCHES NOMINAL IN; Sleeve Diameter: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN; Special Features: 0.750 IN. CORE THK0.750 IN. CORE THK IN; Surface Treatment: PASSIVATE OVERALL. 8 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.