5305-01-268-3644 SCREW,CAP,SOCKET HEAD Index 5305-01-268-3646 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-268-3645

Federal Supply Class:
5305

National Item Identification Number:
012683645

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:
MS21097-400496906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.438 INCHES MINIMUM AND
0.504 INCHES MAXIMUM
FASTENER LENGTH0.698 INCHES MINIMUM AND
0.744 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
HEAD STYLEPAN
HEAD DIAMETER0.473 INCHES MINIMUM AND
0.492 INCHES MAXIMUM
HEAD HEIGHT0.203 INCHES MINIMUM AND
0.218 INCHES MAXIMUM
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
LOCKING FEATUREPATCH THREADS
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS21097-4004


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