5306-00-330-6373, BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-330-6373

Federal Supply Class:
5306

National Item Identification Number:
003306373

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:

211072	11449	TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP
211072	77445	RTX CORPORATION
211072	80539	SPS TECHNOLOGIES, LLC
211072	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
211072	93907	TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.105 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.275 INCHES NOMINAL
DISTANCE FROM CENTERLINE TO FLAT	0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.850 INCHES MINIMUM AND 0.870 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.250 INCHES NOMINAL
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
HEAD DIAMETER	0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM
HEAD STYLE	DEE CHAMFER
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
NONSTANDARD THREAD PITCH DIAMETER	+0.2216 TO 0.2238 INCHES
SECOND DIAMETER FROM HEAD	0.185 INCHES NOMINAL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.470 INCHES MINIMUM AND 0.550 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28

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