The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-666-3283, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 14 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 | 5305-01-666-3283 |
| Primary Part Number | 4014800 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Width Across Flats | 0.314 INCHES NOMINAL IN |
| Head Height | 0.369 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Fastener Length | 1.0000 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.38 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Color | BLACK OVERALL |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.551 INCHES MINIMUM AND 0.561 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 |
|---|---|
| 4014800 PRIMARY | Oshkosh Defense Llc (USA) |
NSN 5305-01-666-3283 is a Screw,cap,socket Head, manufactured by Oshkosh Defense Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-666-3283 has 1 manufacturer part number on file: 4014800 (Oshkosh Defense Llc).
Key specifications for 4014800: Width Across Flats: 0.314 INCHES NOMINAL IN; Head Height: 0.369 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Fastener Length: 1.0000 INCHES NOMINAL IN; Nominal Thread Diameter: 0.38 INCHES IN. 14 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.