NSN 5306-01-218-8278
Part Details | EXTERNALLY RELIEVED BODY BOLT
5306-01-218-8278 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: 9502M44P01, 5306-01-218-8278, 01-218-8278, 5306012188278, 012188278
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | OCT 19, 1985 | 01-218-8278 | 06675 ( BOLT, EXTERNALLY RELIEVED BODY ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
Cross Reference | NSN 5306-01-218-8278
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 9502M44P01 | 07482 | GENERAL ELECTRIC COMPANYDBA GE |
Technical Data | NSN 5306-01-218-8278
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.540 INCHES MINIMUM AND 0.620 INCHES MAXIMUM |
| FASTENER LENGTH | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM |
| HEAD STYLE | 6 UNDERCUT HEXAGON |
| HEAD HEIGHT | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| DISTANCE FROM CENTERLINE TO FLAT | 0.234 INCHES MINIMUM AND 0.240 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.222 INCHES MINIMUM AND 0.232 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.140 INCHES MINIMUM AND 1.200 INCHES MAXIMUM |
| SPECIAL FEATURES | HEAD CHAMFERED 45 DEGREE ANGLE WITH MIN. 0.060 BY MAX. 0.070 IN. |
| ASKEWED HEAD ANGLE | 90.0 DEGREES NOMINAL |