5305-00-410-6524, SCREW,EXTERNALLY RELIEVED BODY

5305-00-410-6523 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-410-6524

Federal Supply Class:
5305

National Item Identification Number:
004106524

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:

6113SS2520	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
6113SS2520	1YGB8	CAREY MANUFACTURING CO, INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.188 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM
HEAD DIAMETER	0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
HEAD HEIGHT	0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM
HEAD STYLE	KNURLED NO. 1
INTERNAL DRIVE STYLE	SLOT
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
SPECIAL FEATURES	POINT STYLE NO. 6,0.188 IN. LG,90 DEG POINT CHAMFER ANGLE,0.175 IN. DIA
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.303 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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