5306-00-395-7273, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-395-7273

Federal Supply Class:
5306

National Item Identification Number:
003957273

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:

4020647	11449	TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP
4020647	77445	RTX CORPORATION
4020647	93907	TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.556 INCHES MINIMUM AND 0.576 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.706 INCHES MINIMUM AND 0.746 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.040 INCHES MINIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.961 INCHES MINIMUM AND 0.981 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.244 INCHES MINIMUM AND 0.246 INCHES MAXIMUM
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.248 INCHES MINIMUM AND 0.268 INCHES MAXIMUM
HEAD STYLE	DOUBLE HEXAGON W/HOLE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES
SECOND DIAMETER FROM HEAD	0.142 INCHES MINIMUM AND 0.146 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.250 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CHROMIUM OVERALL
THREAD CLASS	3A
THREAD LENGTH	0.215 INCHES MINIMUM AND 0.275 INCHES MAXIMUM
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNJF
THREAD QUANTITY PER INCH	32

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