Part Details | THUMBSCREW
5305-01-421-2047 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: MBEU143434, 2021AS271, MBEU143434, 5305-01-421-2047, 01-421-2047, 5305014212047, 014212047
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | NOV 03, 1995 | 01-421-2047 | 06673 ( THUMBSCREW ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK UNDERCUT
Cross Reference | NSN 5305-01-421-2047
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MBEU143434 | U1604 | MARTIN BAKER AIRCRAFT CO LTDDBA MARTIN-BAKER |
| 2021AS271 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGEDORIGINAL DESIGN ACTIVITY NOT |
| MBEU143434 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGEDORIGINAL DESIGN ACTIVITY NOT |
Technical Data | NSN 5305-01-421-2047
| 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 | 0.420 INCHES NOMINAL |
| FASTENER LENGTH | 0.500 INCHES NOMINAL |
| HEAD STYLE | 6 HEXAGON COUNTERSUNK UNDERCUT |
| HEAD DIAMETER | 0.500 INCHES NOMINAL |
| HEAD HEIGHT | 0.500 INCHES NOMINAL |
| SPECIAL FEATURES | THREADS UNDERCUT FOR RELIEF: 0.193 IN. DIA. PORM 0.002 IN. X 0.080 IN. WIDE |