5306-01-479-5028, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-479-5028

Federal Supply Class:
5306

National Item Identification Number:
014795028

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:

5525301-2

53711

NAVAL SEA SYSTEMS COMMAND

Techincal Specification:

THREAD SERIES DESIGNATOR	UNRC
NOMINAL THREAD DIAMETER	0.625 INCHES
THREAD QUANTITY PER INCH	11
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.125 INCHES MINIMUM AND
	1.187 INCHES MAXIMUM
FASTENER LENGTH	3.000 INCHES NOMINAL
MATERIAL	STEEL COMP H11 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6487E ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	NAS672 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	51.0 ROCKWELL C MINIMUM OVERALL
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
HEAD HEIGHT	0.523 INCHES MINIMUM AND
	0.531 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.679 INCHES MINIMUM AND
	0.690 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	1.040 INCHES MINIMUM AND
	1.050 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.140 INCHES MINIMUM AND
	0.160 INCHES MAXIMUM
LOCKING FEATURE	PATCH THREADS
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FIRST DIAMETER FROM HEAD	0.615 INCHES MINIMUM AND
	0.625 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.500 INCHES MINIMUM AND
	0.510 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.750 INCHES MINIMUM AND
	0.875 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.875 INCHES NOMINAL

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