The Screw,machine, cataloged under National Stock Number 5305-01-727-5667, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Zago Manufacturing Co Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-727-5667 |
| Primary Part Number | 4-40X1/2PHPN-OVSZHD-SS-FLUORO |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Zago Manufacturing Co Inc |
| Status | ACTIVE |
| Head Height | 0.097 INCHES MAXIMUM IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Features Provided | O RING |
| Head Style | WATERTIGHT |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Color Document and Classification | MIL-STD-595 MIL SPEC SINGLE COLOR RESPONSE |
| Color | GRAY/GREY |
| Surface Treatment | PASSIVATE |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.294 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 |
|---|---|
| 4-40X1/2PHPN-OVSZHD-SS-FLUORO PRIMARY | Zago Manufacturing Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 363A4040P1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-727-5667 is a Screw,machine, manufactured by Zago Manufacturing Co Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-727-5667 has 1 manufacturer part number on file: 4-40X1/2PHPN-OVSZHD-SS-FLUORO (Zago Manufacturing Co Inc).
Key specifications for 4-40X1/2PHPN-OVSZHD-SS-FLUORO: Head Height: 0.097 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Length: 0.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.112 INCHES IN. 15 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.