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National Stock Number:
5306-00-550-1999
Federal Supply Class:
5306
National Item Identification Number:
005501999
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:
| A3110204 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | AEA8589A | 82796 | COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MINIMUM | | FASTENER LENGTH | 1.750 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | DEE CHAMFER | | HEAD DIAMETER | 0.844 INCHES NOMINAL | | HEAD HEIGHT | 0.312 INCHES NOMINAL | | DISTANCE FROM CENTERLINE TO FLAT | 0.281 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 | | FIRST DIAMETER FROM HEAD | 0.484 INCHES NOMINAL | | SECOND DIAMETER FROM HEAD | 0.499 INCHES MINIMUM AND | | 0.500 INCHES MAXIMUM | | THIRD DIAMETER FROM HEAD | 0.407 INCHES MINIMUM AND | | 0.427 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.125 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.875 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 1.000 INCHES NOMINAL | | SPECIAL FEATURES | CENTER DRILL BOTH ENDS 0.062 DIA BY 0.125 IN. LG |
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