5306-00-089-9441, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-089-9441

Federal Supply Class:
5306

National Item Identification Number:
000899441

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.

Manufacturer Information:

215-78405-2

80378

TRIUMPH AEROSTRUCTURES, LLC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD LENGTH	0.270 INCHES MINIMUM AND
	0.280 INCHES MAXIMUM
FASTENER LENGTH	1.770 INCHES MINIMUM AND
	1.810 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
HEAD STYLE	ROUND W/WRENCH FLATS
HEAD DIAMETER	0.625 INCHES NOMINAL
HEAD HEIGHT	0.160 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.490 INCHES MINIMUM AND
	0.500 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.665 INCHES NOMINAL FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES NOMINAL FIRST HOLE
FIRST DIAMETER FROM HEAD	0.250 INCHES NOMINAL
SECOND DIAMETER FROM HEAD	0.3116 INCHES MINIMUM AND
	0.3118 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.192 INCHES MINIMUM AND
	0.197 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.060 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.420 INCHES MINIMUM AND
	1.430 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.500 INCHES MINIMUM AND
	1.510 INCHES MAXIMUM
THE MANUFACTURERS DATA
MANUFACTURERS CODE	80378
DESIGN CONTROL REFERENCE	215-78405-2

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