5305-00-623-8280, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-623-8280

Federal Supply Class:
5305

National Item Identification Number:
006238280

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:

312414	03956	NORTHROP GRUMMAN SYSTEMS CORPORATION
312414	56232	LOCKHEED MARTIN CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.094 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.469 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.816 INCHES MINIMUM AND 0.848 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
HEAD DIAMETER	0.360 INCHES MINIMUM AND 0.391 INCHES MAXIMUM
HEAD HEIGHT	0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM
HEAD STYLE	KNURLED NO. 1
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 1212 OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
SECOND DIAMETER FROM HEAD	0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM
SPECIAL FEATURES	CONE POINT 90 DEG OF ANGLE
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.188 INCHES MINIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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