5305-01-564-4656 SCREW,CAP,SOCKET HEAD Index 5305-01-564-4658 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-564-4657

Federal Supply Class:
5305

National Item Identification Number:
015644657

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:
12759-007960Y3H3FASTENAL COMPANY
940530Y3H3FASTENAL COMPANY


Techincal Specification:
FASTENER LENGTH1.000 INCHES NOMINAL
HEAD DIAMETER0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
HEAD HEIGHT0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM
HEAD STYLEBUTTON
INTERNAL DRIVE STYLEHEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCY1/4-20X1 INCH ZINC PLATED BUTTON HEAD SOCKET CAP SCREW
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURESMATERIAL AND MECHANICAL PROPERTIES ASTM F 835
WIDTH ACROSS FLATS0.158 INCHES NOMINAL
SURFACE TREATMENTZINC OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNRC
THREAD QUANTITY PER INCH20


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