The Screw,machine, cataloged under National Stock Number 5305-01-691-8396, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Aeronautics Division - Pomigliano D'arco Site. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-691-8396 |
| Primary Part Number | NAS1801-04-33 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site |
| Status | ACTIVE |
| Head Height | 0.049 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 2.0625 INCHES NOMINAL IN |
| Thread Length | 2.0305 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.1120 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.181 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Screw Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNJC |
| 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 |
|---|---|
| NAS1801-04-33 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| Reference | Meaning |
|---|---|
| NAS1801-04-33 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-691-8396 is a Screw,machine, manufactured by Leonardo Spa Aeronautics Division - Pomigliano D'arco Site, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-691-8396 has 1 manufacturer part number on file: NAS1801-04-33 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
Key specifications for NAS1801-04-33: Head Height: 0.049 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Screw Surface Treatment: CADMIUM; Fastener Length: 2.0625 INCHES NOMINAL IN; Thread Length: 2.0305 INCHES NOMINAL IN. 13 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.