5305-01-145-6940, SCREW,EXTERNALLY RELIEVED BODY

5305-01-145-6939 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-145-6940

Federal Supply Class:
5305

National Item Identification Number:
011456940

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:

SM-B-698433

80063

US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	3.689 INCHES MINIMUM AND 3.689 INCHES MINIMUM AND 3.703 INCHES MAXIMUM3.703 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	11
FASTENER LENGTH	4.064 INCHES MINIMUM AND 4.064 INCHES MINIMUM AND 4.078 INCHES MAXIMUM4.078 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.124 INCHES MINIMUM AND 0.124 INCHES MINIMUM AND 0.129 INCHES MAXIMUM0.129 INCHES MAXIMUM
HEAD DIAMETER	0.281 INCHES NOMINAL0.281 INCHES NOMINAL
HEAD HEIGHT	0.257 INCHES NOMINAL0.257 INCHES NOMINAL
HEAD STYLE	FLAT CHAMFERFLAT CHAMFER
INTERNAL DRIVE STYLE	SLOTSLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALLASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES0.164 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALLPASSIVATE OVERALL
THREAD CLASS	2A2A
THREAD DIRECTION	RIGHT-HANDRIGHT-HAND
THREAD LENGTH	0.375 INCHES NOMINAL0.375 INCHES NOMINAL
THREAD QUANTITY PER INCH	3232
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)

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