5305-01-265-6390, SCREW,EXTERNALLY RELIEVED BODY

5340-01-265-6389 CAP,PROTECTIVE,DUST AND MOISTURE

National Stock Number:
5305-01-265-6390

Federal Supply Class:
5305

National Item Identification Number:
012656390

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:

173107-102	92755	NORTHROP GRUMMAN SYSTEMS CORP
50505-1002	52094	CALMARK CORPORATION
50505-1002	61081	SCHROFF INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	4.160 INCHES MINIMUM AND 4.190 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	4.610 INCHES MINIMUM AND 4.640 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM
HEAD DIAMETER	0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
HEAD HEIGHT	0.120 INCHES NOMINAL
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.112 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.450 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	40
WIDTH ACROSS FLATS	0.090 INCHES NOMINAL

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