5306-01-528-0815, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-528-0815

Federal Supply Class:
5306

National Item Identification Number:
015280815

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:

70700-77344-118

78286

SIKORSKY AIRCRAFT CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	2.750 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	2.906 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	3.500 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	6.000 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM
HEAD HEIGHT	0.460 INCHES NOMINAL
HEAD STYLE	HEXAGON
PROPRIETARY CHARACTERISTICS	PACS
NOMINAL THREAD DIAMETER	0.625 INCHES
SECOND DIAMETER FROM HEAD	0.500 INCHES NOMINAL
SPECIAL FEATURES	THREAD END COUNTERSUNK 0.375IN DEEP WITH A DIAMETER OF 0.193-0.183IN
WIDTH BETWEEN FLATS	0.938 INCHES NOMINAL
THIRD DIAMETER FROM HEAD	0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	2.500 INCHES NOMINAL
THREAD QUANTITY PER INCH	18
THREAD SERIES DESIGNATOR	UNF

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