Part Details | THUMBSCREW
5305-00-568-8581 An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified).
Alternate Parts: 8008578, 5305-00-568-8581, 00-568-8581, 5305005688581, 005688581
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-568-8581 | 06673 ( THUMBSCREW ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK UNDERCUT
OVAL
Cross Reference | NSN 5305-00-568-8581
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8008578 | 18876 | U S ARMY AVIATION AND MISSILECOMMAND |
Technical Data | NSN 5305-00-568-8581
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.438 INCHES MINIMUM |
| FASTENER LENGTH | 1.062 INCHES NOMINAL |
| HEAD STYLE | 7 HEXAGON COUNTERSUNK UNDERCUT |
| HEAD DIAMETER | 1.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.625 INCHES NOMINAL |
| POINT STYLE | OVAL |
| POINT LENGTH | 0.125 INCHES NOMINAL |
| FIRST DIAMETER FROM HEAD | 0.250 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.500 INCHES NOMINAL |