NSN 5306-01-253-2239
Part Details | EXTERNALLY RELIEVED BODY BOLT
5306-01-253-2239 An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.
Alternate Parts: 863C0120050003, 863C0120050-003, 5306-01-253-2239, 01-253-2239, 5306012532239, 012532239
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | APR 14, 1987 | 01-253-2239 | 06675 ( BOLT, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
FLAT
DOUBLE HEXAGON FLATS
Cross Reference | NSN 5306-01-253-2239
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 863C0120050-003 | 04236 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN SPACE SYSTEMS |
Technical Data | NSN 5306-01-253-2239
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.808 INCHES NOMINAL |
| FASTENER LENGTH | 2.512 INCHES MINIMUM AND 2.542 INCHES MAXIMUM |
| HEAD STYLE | 8 HEXAGON |
| HEAD HEIGHT | 2.110 INCHES MINIMUM AND 2.150 INCHES MAXIMUM |
| HEAD LENGTH | 2.500 INCHES NOMINAL |
| TEE HEAD FLANGE THICKNESS | 0.380 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 1.890 INCHES NOMINAL |
| HOLE CONFIGURATION STYLE | 5 DOUBLE HEXAGON FLATS |
| HOLE TYPE | DRILLED |
| HOLE QUANTITY | 4 |
| HOLE DIAMETER | 0.249 INCHES MINIMUM AND 0.256 INCHES MAXIMUM |
| POINT STYLE | FLAT |
| POINT LENGTH | 0.030 INCHES NOMINAL |
| POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
| FIRST DIAMETER FROM HEAD | 0.623 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| SECOND DIAMETER FROM HEAD | 0.417 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.625 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.719 INCHES NOMINAL |