5306-00-056-8510, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-056-8510

Federal Supply Class:
5306

National Item Identification Number:
000568510

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:

482892	11449	TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP
482892	77445	RTX CORPORATION
482892	J1695	KITO MFG CO. LTD
482892	S0254	KITO MFG CO. LTD

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.930 INCHES MINIMUM AND 0.970 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.785 INCHES NOMINAL FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	2.070 INCHES MINIMUM AND 2.110 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.530 INCHES MINIMUM AND 0.570 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER	2.430 INCHES MINIMUM AND 2.490 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.210 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	5
FASTENER LENGTH	2.430 INCHES MINIMUM AND 2.490 INCHES MAXIMUM
FIFTH DIAMETER FROM HEAD	0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.194 INCHES MINIMUM AND 0.198 INCHES MAXIMUM
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SECOND DIAMETER FROM HEAD	0.194 INCHES MINIMUM AND 0.198 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THIRD DIAMETER FROM HEAD	0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.380 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28
WIDTH BETWEEN FLATS	0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM

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