5305-01-270-1219, SCREW,EXTERNALLY RELIEVED BODY

2590-01-270-1218 MODIFICATION KIT,VEHICULAR EQUIP

National Stock Number:
5305-01-270-1219

Federal Supply Class:
5305

National Item Identification Number:
012701219

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:

4209-M07-F09	04729	UNICORP.
6175-SS-0632	1YGB8	CAREY MANUFACTURING CO, INC
GS553P06C13	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
747-0.812-SS-12NS	51506	ACCURATE SCREW MACHINE CORP

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.489 INCHES MINIMUM AND 0.509 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.090 INCHES MINIMUM AND 0.105 INCHES MAXIMUM
HEAD DIAMETER	0.307 INCHES MINIMUM AND 0.327 INCHES MAXIMUM
HEAD HEIGHT	0.161 INCHES MINIMUM AND 0.213 INCHES MAXIMUM
HEAD STYLE	KNURLED NO. 2
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL	STEEL COMP 203EZ OR STEEL COMP 303 OR STEEL COMP 303 PLUS X OR STEEL COMP 303MA OR STEEL COMP 303PB OR STEEL COMP 303SE OR STEEL COMP 416 OR STEEL COMP 416 PLUS X OR STEEL COMP 416SE OR STEEL COMP 430F OR STEEL COMP 420FSE OR STEEL COMP 420F OR STEEL COMP 430FSE OR STEEL COMP 440F OVERALL
NOMINAL THREAD DIAMETER	0.138 INCHES
POINT CHAMFER ANGLE	55.0 DEGREES MINIMUM AND 65.0 DEGREES MAXIMUM
POINT DIAMETER	0.079 INCHES MINIMUM AND 0.095 INCHES MAXIMUM
POINT LENGTH	0.125 INCHES NOMINAL
POINT STYLE	CONE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.173 INCHES MINIMUM AND 0.188 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	32

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