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


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