5305-01-284-2477 SCREW,CAP,SOCKET HEAD Index 5305-01-284-2479 SETSCREW

National Stock Number:
5305-01-284-2478

Federal Supply Class:
5305

National Item Identification Number:
012842478

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:
522-4674891 ITEM 680064NAVAL SHIP SYSTEMS COMMAND
60-16-962496169ELECTRIC BOAT CORPORATION


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH16
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.375 INCHES MINIMUM AND
1.500 INCHES MAXIMUM
FASTENER LENGTH1.500 INCHES NOMINAL
MATERIALNICKEL ALLOY 400 FASTENER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE FASTENER
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH40000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.550 INCHES MINIMUM AND
0.562 INCHES MAXIMUM
HEAD HEIGHT0.368 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.312 INCHES NOMINAL
LOCKING FEATUREPATCH OR
PELLET OR
STRIP THREADS


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