5340-01-559-4479 CAP,PROTECTIVE,DUST AND MOISTURE Index 5340-01-559-4481 CAP,PROTECTIVE,DUST AND MOISTURE

National Stock Number:
5305-01-559-4480

Federal Supply Class:
5305

National Item Identification Number:
015594480

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:
737811KE74FASTENAL COMPANY DIV FLPAN


Techincal Specification:
FASTENER LENGTH1.250 INCHES NOMINAL
HEAD DIAMETER0.527 INCHES MINIMUM AND 0.547 INCHES MAXIMUM
HEAD HEIGHT0.152 INCHES MINIMUM AND 0.166 INCHES MAXIMUM
HEAD STYLEBUTTON
INTERNAL DRIVE STYLEHEXAGON
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.250 INCHES NOMINAL
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.312 INCHES NOMINAL


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