5306-00-207-5187, BOLT,EXTERNALLY RELIEVED BODY

5306-00-207-5190 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-00-207-5187

Federal Supply Class:
5306

National Item Identification Number:
002075187

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:

255711

77445

RTX CORPORATION

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.312 INCHES
THREAD QUANTITY PER INCH	24
NONSTANDARD THREAD PITCH DIAMETER	0.2800 TO 0.2824 INCHES
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.375 INCHES MINIMUM
FASTENER LENGTH	0.490 INCHES MINIMUM AND
	0.510 INCHES MAXIMUM
MATERIAL	STEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	SILVER OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND
	38.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	DOUBLE HEXAGON W/HOLE
HEAD HEIGHT	0.365 INCHES MINIMUM AND
	0.385 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.367 INCHES MINIMUM AND
	0.376 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	0.490 INCHES MINIMUM AND
	0.510 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.070 INCHES MINIMUM AND
	0.080 INCHES MAXIMUM
HOLE CONFIGURATION STYLE	DOUBLE HEXAGON LONGITUDINAL HOLE
HOLE TYPE	DRILLED
HOLE QUANTITY	2
HOLE DIAMETER	0.065 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FIRST DIAMETER FROM HEAD	0.247 INCHES MINIMUM AND
	0.251 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.125 INCHES NOMINAL
PRECIOUS MATERIAL	SILVER
THE MANUFACTURERS DATA
MANUFACTURERS CODE	77445
DESIGN CONTROL REFERENCE	255711

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