5306-00-862-3987, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-862-3987

Federal Supply Class:
5306

National Item Identification Number:
008623987

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:

413747	77445	RTX CORPORATION
413747	80539	SPS TECHNOLOGIES, LLC
413747	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
413747	93907	TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.312 INCHES
THREAD QUANTITY PER INCH	24
NONSTANDARD THREAD PITCH DIAMETER	0.2797 TO 0.2824 INCHES
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.500 INCHES MINIMUM
FASTENER LENGTH	1.220 INCHES NOMINAL
MATERIAL	STEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND
	38.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	ROUND W/WRENCH FLATS
HEAD DIAMETER	0.615 INCHES MINIMUM AND
	0.635 INCHES MAXIMUM
HEAD HEIGHT	0.240 INCHES MINIMUM AND
	0.260 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.490 INCHES MINIMUM AND
	0.510 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FIRST DIAMETER FROM HEAD	0.309 INCHES MINIMUM AND
	0.312 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.235 INCHES MINIMUM AND
	0.245 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.260 INCHES MINIMUM AND
	0.280 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.330 INCHES MINIMUM AND
	0.370 INCHES MAXIMUM
SPECIAL FEATURES	THD END CHAMFERED 30.0 DEG 0.158 IN. LG BY 0.130 IN. DIA
THE MANUFACTURERS DATA
MANUFACTURERS CODE	77445
DESIGN CONTROL REFERENCE	413747

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