The Setscrew, cataloged under National Stock Number 5305-01-559-4818, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company Div Flpan. 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 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 | 5305-01-559-4818 |
| Primary Part Number | 73259 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastenal Company Div Flpan |
| Status | ACTIVE |
| Point Diameter | 0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN |
| Width Across Flats | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Point Chamfer Angle | 118.0 DEGREES NOMINAL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 73259 PRIMARY | Fastenal Company Div Flpan (USA) |
NSN 5305-01-559-4818 is a Setscrew, manufactured by Fastenal Company Div Flpan, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-559-4818 has 1 manufacturer part number on file: 73259 (Fastenal Company Div Flpan).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-653-6745. Verify interchangeability with system specifications before substitution.
Key specifications for 73259: Point Diameter: 0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN; Width Across Flats: 0.125 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Point Chamfer Angle: 118.0 DEGREES NOMINAL. 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.