5306-00-478-5968, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-478-5968

Federal Supply Class:
5306

National Item Identification Number:
004785968

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:

47-120-155-1	80070	LOCKHEED MARTIN CORPORATION
47-120-155-1	97499	BELL TEXTRON INC
53060H13-003	81996	U S ARMY AVIATION AND MISSILE COMMAND

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.781 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	4.000 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	4.187 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	4.843 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.436 INCHES NOMINAL
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.438 INCHES
SECOND DIAMETER FROM HEAD	0.360 INCHES MINIMUM AND 0.370 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THIRD DIAMETER FROM HEAD	0.436 INCHES NOMINAL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.656 INCHES MINIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNF

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