5305-00-978-7943, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-978-7943

Federal Supply Class:
5305

National Item Identification Number:
009787943

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:

0N017758	98230	NATIONAL SECURITY AGENCY
290-023-0004	95542	NORTHROP GRUMMAN SYSTEMS CORPORATION
6238SS0832	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
6238SS0832-7	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
6238SS0832-7	1YGB8	CAREY MANUFACTURING CO, INC
610074P23	94117	BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
P44F734	06KW9	LUCENT TECHNOLOGIES INC DBA FEDERAL MARKETING GROUP
P44F734	3B4M0	LUCENT TECHNOLOGIES INC CORPORATE HEADQUARTERS
P44F734	64959	AMERICAN TELEPHONE AND TELEGRAPH CO

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.532 INCHES MINIMUM AND 0.552 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
HEAD HEIGHT	0.102 INCHES NOMINAL
HEAD DIAMETER	0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
HEAD STYLE	FILLISTER
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 303 OR STEEL COMP 303 PLUS X OR STEEL COMP 303MA OR STEEL COMP 303SE OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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