Part Details | THUMBSCREW
5305-00-308-3557 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: 44060, 5305-00-308-3557, 00-308-3557, 5305003083557, 003083557
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-308-3557 | 06673 ( THUMBSCREW ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK UNDERCUT
CONE
Cross Reference | NSN 5305-00-308-3557
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 44060 | 24930 | HARRIS CORPORATIONDBA ELECTRONIC SYSTEMS, RADAR |
Technical Data | NSN 5305-00-308-3557
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.625 INCHES MINIMUM |
| FASTENER LENGTH | 2.000 INCHES NOMINAL |
| HEAD STYLE | 6 HEXAGON COUNTERSUNK UNDERCUT |
| HEAD DIAMETER | 1.500 INCHES NOMINAL |
| HEAD HEIGHT | 0.438 INCHES NOMINAL |
| POINT STYLE | CONE |
| POINT LENGTH | 0.188 INCHES NOMINAL |
| POINT CHAMFER ANGLE | 60.0 DEGREES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 |
| FIRST DIAMETER FROM HEAD | 0.125 INCHES NOMINAL |
| SECOND DIAMETER FROM HEAD | 0.151 INCHES NOMINAL |
| THIRD DIAMETER FROM HEAD | 0.156 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.063 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |