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National Stock Number:
5306-01-125-8263
Federal Supply Class:
5306
National Item Identification Number:
011258263
Description:
BOLT,EXTERNALLY RELIEVED BODY
Detail:
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.
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Manufacturer Information:
| 65171-07040-129 | 78286 | SIKORSKY AIRCRAFT CORPORATION | | 65171-07105-129 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.434 INCHES NOMINAL | | FASTENER LENGTH | 2.263 INCHES MINIMUM AND | | 2.293 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | SILVER OVERALL | | HEAD STYLE | DISHED HEXAGON | | HEAD HEIGHT | 0.490 INCHES MINIMUM AND | | 0.510 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND | | 0.752 INCHES MAXIMUM | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.533 INCHES NOMINAL | | SECOND DIAMETER FROM HEAD | 0.533 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.750 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 2.263 INCHES MINIMUM AND | | 2.293 INCHES MAXIMUM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 78286 | | DESIGN CONTROL REFERENCE | 65171-07040-129 |
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