5305-01-336-7540, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-336-7540

Federal Supply Class:
5305

National Item Identification Number:
013367540

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:

717751148-004

04939

LOCKHEED MARTIN CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.625 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM
HEAD DIAMETER	0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD HEIGHT	0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.138 INCHES
WIDTH ACROSS FLATS	0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	2A
THREAD LENGTH	0.325 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNRC
THREAD QUANTITY PER INCH	32

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