5306-00-952-6526, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-952-6526

Federal Supply Class:
5306

National Item Identification Number:
009526526

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:

105B3850P1	07482	GENERAL ELECTRIC COMPANY
105B3850P1	24446	GENERAL ELECTRIC COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.905 INCHES MINIMUM AND 0.965 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.005 INCHES MINIMUM AND 0.025 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.175 INCHES MINIMUM AND 0.195 INCHES MAXIMUM
HEAD STYLE	HEXAGON
HOLE CONFIGURATION STYLE	HEXAGON LONGITUDINAL HOLE
HOLE DIAMETER	0.070 INCHES NOMINAL
HOLE QUANTITY	1
HOLE TYPE	DRILLED
MATERIAL	NICKEL ALLOY OVERALL
MINIMUM TENSILE STRENGTH	165000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.312 INCHES
PRECIOUS MATERIAL	SILVER
SECOND DIAMETER FROM HEAD	0.308 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
SURFACE TREATMENT	SILVER OVERALL
THIRD DIAMETER FROM HEAD	0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.320 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	24
WIDTH BETWEEN FLATS	0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM

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