The Screw,machine, cataloged under National Stock Number 5305-01-256-6802, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Product Components Corporation. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-256-6802 |
| Primary Part Number | 1/4-28X.500LONG |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Product Components Corporation |
| Status | ACTIVE |
| Head Height | 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.429 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | PLASTIC POLYAMIDE NYLON |
| Color | NATURAL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.443 INCHES MINIMUM AND 0.472 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 |
|---|---|
| 1/4-28X.500LONG PRIMARY | Product Components Corporation (USA) |
NSN 5305-01-256-6802 is a Screw,machine, manufactured by Product Components Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-256-6802 has 1 manufacturer part number on file: 1/4-28X.500LONG (Product Components Corporation).
Key specifications for 1/4-28X.500LONG: Head Height: 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Length: 0.429 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES 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.