5331-01-415-0643 O-RING Index 5305-01-415-0645 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-415-0644

Federal Supply Class:
5305

National Item Identification Number:
014150644

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:
21106913053711NAVAL SEA SYSTEMS COMMAND
801-6408784-153711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
FASTENER LENGTH1.000 INCHES NOMINAL
HARDNESS RATING24.0 ROCKWELL C MINIMUM OVERALL
HEAD DIAMETER0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
HEAD HEIGHT0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM
HEAD STYLEPAN NO. 2
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREPATCH OR STRIP OR PELLET THREADS
MATERIALNICKEL ALLOY K-500 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD CLASS3A
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNRC
WIDTH ACROSS FLATS0.156 INCHES NOMINAL


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