The Screw,assembled Washer, cataloged under National Stock Number 5305-01-666-4309, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-666-4309 |
| Primary Part Number | 0175405 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastenal Company |
| Status | ACTIVE |
| Head Height | 0.110 INCHES NOMINAL IN |
| Fastener Length | 0.75 INCHES NOMINAL IN |
| Primary Washer Outside Diameter | 0.327 INCHES MINIMUM IN |
| Thread Length | 0.60 INCHES NOMINAL IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM RING |
| Nominal Thread Diameter | 0.1640 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | FLAT INTERNAL TEETH |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.03 INCHES MINIMUM IN |
| Internal Drive Style | CROSS RECESS TYPE II |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.105 INCHES MINIMUM 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 |
|---|---|
| 0175405 PRIMARY | Fastenal Company (USA) |
NSN 5305-01-666-4309 is a Screw,assembled Washer, manufactured by Fastenal Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-666-4309 has 1 manufacturer part number on file: 0175405 (Fastenal Company).
Key specifications for 0175405: Head Height: 0.110 INCHES NOMINAL IN; Fastener Length: 0.75 INCHES NOMINAL IN; Primary Washer Outside Diameter: 0.327 INCHES MINIMUM IN; Thread Length: 0.60 INCHES NOMINAL IN. 17 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.