The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-602-0640, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Uk Ltd. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-602-0640 |
| Primary Part Number | 21713-00181 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Leonardo Uk Ltd |
| Status | ACTIVE |
| Head Height | 0.312 INCHES MAXIMUM IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80204-ANSIB18 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 21713-00181 | Leonardo Uk Ltd (GBR) |
| 186753722 | Safran Electronics & Defense (FRA) |
| Reference | Meaning |
|---|---|
| 21713-00181 | 5/9 Secondary reference Leonardo Mw Ltd |
| ASAB18-3 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5305-00-602-0640 is a Screw,cap,hexagon Head, manufactured by Leonardo Uk Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-602-0640 has 2 manufacturer part numbers on file: 21713-00181 (Leonardo Uk Ltd), 186753722 (Safran Electronics & Defense).
Key specifications for 21713-00181: Head Height: 0.312 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES NOMINAL IN; Thread Length: 1.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES IN. 12 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.