Part Details | EXTERNALLY RELIEVED BODY BOLT
5306-00-638-4744 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: 6748959, 5306-00-638-4744, 00-638-4744, 5306006384744, 006384744
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-638-4744 | 06675 ( BOLT, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5306-00-638-4744
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 6748959 | 73342 | ALLISON TRANSMISSION, INC. |
Technical Data | NSN 5306-00-638-4744
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.522 INCHES MINIMUM AND 0.682 INCHES MAXIMUM |
| FASTENER LENGTH | 2.250 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.188 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 |
| FIRST DIAMETER FROM HEAD | 0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM |
| SECOND DIAMETER FROM HEAD | 0.345 INCHES MINIMUM AND 0.346 INCHES MAXIMUM |
| THIRD DIAMETER FROM HEAD | 0.248 INCHES MINIMUM AND 0.258 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.078 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.490 INCHES MINIMUM AND 1.550 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 1.568 INCHES MINIMUM AND 1.628 INCHES MAXIMUM |