3120-01-538-3937 BUSHING,SLEEVE Index 5310-01-538-3939 NUT,PLAIN,HEXAGON

National Stock Number:
5305-01-538-3938

Federal Supply Class:
5305

National Item Identification Number:
015383938

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.


Manufacturer Information:
NASM16995-8280205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
FASTENER LENGTH1.250 INCHES NOMINAL
HEAD DIAMETER0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM
HEAD HEIGHT0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES
WIDTH ACROSS FLATS0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.250 INCHES NOMINAL
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUNC


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