5305-01-215-0492, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-215-0492

Federal Supply Class:
5305

National Item Identification Number:
012150492

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:

12321043	19200	US ARMY ARDEC RDECOM
12321043	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.487 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.080 INCHES NOMINAL
EXTENDED WASHER DIAMETER	0.370 INCHES NOMINAL
EXTENDED WASHER THICKNESS	0.060 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.560 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.250 INCHES NOMINAL
HEAD HEIGHT	0.060 INCHES NOMINAL
HEAD DIAMETER	0.249 INCHES NOMINAL
HEAD STYLE	FLAT EXTENDED WASHER
INTERNAL DRIVE STYLE	SLOT
LOCKING FEATURE	STRIP LOCKING FEATURE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763,CL 202,302,304,CONDITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES
POINT CHAMFER ANGLE	45.0 DEGREES NOMINAL
POINT DIAMETER	0.124 INCHES NOMINAL
POINT LENGTH	0.125 INCHES NOMINAL
POINT STYLE	FLAT
SECOND DIAMETER FROM HEAD	0.312 INCHES NOMINAL
SPECIAL FEATURES	MINIMUM BREAKAWAY TORQUE 6.5 IN. LBS.,MAX TORQUE 60 IN. LBS.
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.481 INCHES NOMINAL
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNEF

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