9540-01-428-6602 BEAM,STRUCTURAL Index 5315-01-428-6604 PIN,HOLLOW

National Stock Number:
5305-01-428-6603

Federal Supply Class:
5305

National Item Identification Number:
014286603

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:
21104510153711NAVAL SEA SYSTEMS COMMAND
512-6404652-10253711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
THREAD SERIES DESIGNATORUNRC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.750 INCHES NOMINAL
FASTENER LENGTH0.750 INCHES NOMINAL
MATERIALSTEEL OVERALL
PLASTIC POLYAMIDE LOCKING FEATURE
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.480 INCHES MINIMUM AND
0.531 INCHES MAXIMUM
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.156 INCHES NOMINAL
LOCKING FEATUREPATCH OR
PELLET OR
STRIP THREADS


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