The Screw,machine, cataloged under National Stock Number 5305-00-522-2431, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Watervliet Arsenal Div Business Development. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-522-2431 |
| Primary Part Number | 5222431 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Army, United States Department of the Dba Watervliet Arsenal Div Business Development |
| Status | ACTIVE |
| Fastener Length | 0.516 INCHES NOMINAL IN |
| Screw Material Document and Classification | QQ-B-626,TEMPER 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | COPPER ALLOY 260 |
| Internal Drive Style | SLOT |
| Countersink Angle | 80.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.385 INCHES MINIMUM AND 0.390 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 |
|---|---|
| 5222431 | Army, United States Department of the Dba Watervliet Arsenal Div Business Development (USA) |
| Reference | Meaning |
|---|---|
| 200820313-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-522-2431 is a Screw,machine, manufactured by Army, United States Department of the Dba Watervliet Arsenal Div Business Development, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-522-2431 has 1 manufacturer part number on file: 5222431 (Army, United States Department of the Dba Watervliet Arsenal Div Business Development).
Key specifications for 5222431: Fastener Length: 0.516 INCHES NOMINAL IN; Screw Material Document and Classification: QQ-B-626,TEMPER 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 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.