Part Details | THUMBSCREW
5305-00-638-6307 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: SC1015A, 5305-00-638-6307, 00-638-6307, 5305006386307, 006386307
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-638-6307 | 06673 ( THUMBSCREW ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK UNDERCUT
Cross Reference | NSN 5305-00-638-6307
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| SC1015A | 80249 | BAE SYSTEMS INFORMATION ANDELECTRONIC SYSTEMS INTEGRATION INC. |
Technical Data | NSN 5305-00-638-6307
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.312 INCHES MINIMUM |
| FASTENER LENGTH | 1.000 INCHES NOMINAL |
| HEAD STYLE | 6 HEXAGON COUNTERSUNK UNDERCUT |
| HEAD DIAMETER | 0.438 INCHES NOMINAL |
| HEAD HEIGHT | 0.375 INCHES NOMINAL |
| POINT LENGTH | 0.094 INCHES NOMINAL |
| POINT DIAMETER | 0.189 INCHES NOMINAL |
| POINT CHAMFER ANGLE | 120.0 DEGREES NOMINAL |