5305-01-418-9691, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-418-9691

Federal Supply Class:
5305

National Item Identification Number:
014189691

Description:
SCREW,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 undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.

Manufacturer Information:

5099618-1	64248	ASTRO MACHINE CO INC
5099618-1	82577	RAYTHEON COMPANY
75305014062137	80132	NAVAL INVENTORY CONTROL POINT

Techincal Specification:

THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.164 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.216 INCHES MAXIMUM
FASTENER LENGTH	0.732 INCHES NOMINAL
MATERIAL	STEEL OR
	IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM 276 UNS S21800 COND A COLD FINISH ASSN STD 1ST MATERIAL RESPONSE OR
	AMS 5734 ASSN STD 2ND MATERIAL RESPONSE OR
	AMS 5737 ASSN STD 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 TY 7 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.165 INCHES NOMINAL
WIDTH BETWEEN FLATS	0.312 INCHES NOMINAL
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
POINT STYLE	CONE
POINT CHAMFER ANGLE	140.0 DEGREES MINIMUM AND
	160.0 DEGREES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FIRST DIAMETER FROM HEAD	0.160 INCHES MINIMUM AND
	0.166 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD	0.127 INCHES MINIMUM AND
	0.129 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.160 INCHES MINIMUM AND
	0.166 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.124 INCHES MINIMUM AND
	0.132 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.407 INCHES MINIMUM AND
	0.417 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.442 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.472 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	0.522 INCHES NOMINAL
SPECIAL FEATURES	STEEL ALLOY:UNS S21800

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