The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-590-7983, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rochester Sensors, Llc. Government technical data includes 9 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 | 5305-01-590-7983 |
| Primary Part Number | 0040-00427 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rochester Sensors, Llc |
| Status | ACTIVE |
| Fastener Length | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Thread Length | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| 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 |
|---|---|
| 0040-00427 PRIMARY | Rochester Sensors, Llc (USA) |
NSN 5305-01-590-7983 is a Screw,cap,socket Head, manufactured by Rochester Sensors, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-590-7983 has 1 manufacturer part number on file: 0040-00427 (Rochester Sensors, Llc).
Key specifications for 0040-00427: Fastener Length: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Thread Length: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FILLISTER. 9 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.