5305-00-675-2514 SETSCREW Index 5305-00-675-2522 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-675-2521

Federal Supply Class:
5305

National Item Identification Number:
006752521

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:
12729106481NORTHROP GRUMMAN SYSTEMS CORPORATION
542-4332-00213499ROCKWELL COLLINS, INC.


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER1.320 INCHES MINIMUM AND 1.336 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER2.953 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.382 INCHES MINIMUM AND 1.398 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER2.891 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH3.258 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.156 INCHES NOMINAL
FOURTH DIAMETER FROM HEAD0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
HEAD DIAMETER0.264 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
HEAD HEIGHT0.141 INCHES MINIMUM AND 0.169 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLESLOT
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER0.164 INCHES
SECOND DIAMETER FROM HEAD0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION580-0025-00 FSCM 90107 MFR REF ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTPASSIVATE AND PAINT OVERALL
THIRD DIAMETER FROM HEAD0.156 INCHES NOMINAL
THREAD CLASS2A
THREAD LENGTH0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNC
THREAD QUANTITY PER INCH32


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