The Screw Assembly,panel, cataloged under National Stock Number 5305-01-429-3724, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Ferrum Industries Inc. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-429-3724 |
| Primary Part Number | F220-428-3 |
| Item Name | Screw Assembly,panel |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Ferrum Industries Inc |
| Status | ACTIVE |
| Head Height | 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Fastener Length | 1.015 INCHES MINIMUM IN |
| Material Accommodated Thickness | 0.055 INCHES NOMINAL IN |
| Thread Length | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | KNURLED NO. 4 |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE FASTENER |
| Surface Treatment | PASSIVATE STAND-OFF |
| Surface Treatment | CHROMATE AND CADMIUM SPRING |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING FASTENER |
| Material | STEEL CORROSION RESISTING STAND-OFF |
| Material | COPPER SPRING |
| Thread Series Designator | UNF |
| Head Diameter | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM 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 |
|---|---|
| F220-428-3 PRIMARY | Ferrum Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 2836135-11 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5305-01-429-3724 is a Screw Assembly,panel, manufactured by Ferrum Industries Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-429-3724 has 1 manufacturer part number on file: F220-428-3 (Ferrum Industries Inc).
Key specifications for F220-428-3: Head Height: 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN; Fastener Length: 1.015 INCHES MINIMUM IN; Material Accommodated Thickness: 0.055 INCHES NOMINAL IN; Thread Length: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN. 18 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.