5306-00-558-4526, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-558-4526

Federal Supply Class:
5306

National Item Identification Number:
005584526

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:

307168

77445

RTX CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.233 INCHES MINIMUM AND 0.282 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	1.188 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.246 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.188 INCHES NOMINAL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES
NONSTANDARD THREAD PITCH DIAMETER	+0.2797 TO 0.2824 INCHES
SECOND DIAMETER FROM HEAD	0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.813 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	24
WIDTH BETWEEN FLATS	0.498 INCHES NOMINAL

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