1560-01-455-2221 STIFFENER,AIRCRAFT Index 5930-01-455-2223 SWITCH,THERMOSTATIC

National Stock Number:
5305-01-455-2222

Federal Supply Class:
5305

National Item Identification Number:
014552222

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:
21104146253711NAVAL SEA SYSTEMS COMMAND
595-6408321 FIND 1953711NAVAL SEA SYSTEMS COMMAND
6404642 FIND 1953711NAVAL SEA SYSTEMS COMMAND
751-6402610 FIND53711NAVAL SEA SYSTEMS COMMAND
751-6408321 FIND 1953711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
THREAD SERIES DESIGNATORUNRC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.500 INCHES NOMINAL
FASTENER LENGTH0.750 INCHES NOMINAL
MATERIALNICKEL ALLOY 400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.480 INCHES MINIMUM AND
0.531 INCHES MAXIMUM
COUNTERSINK ANGLE80.0 DEGREES NOMINAL
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.156 INCHES NOMINAL


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