5305-01-445-0425 SCREW,CAP,SOCKET HEAD Index 5340-01-445-0427 BRACKET,MOUNTING

National Stock Number:
5305-01-445-0426

Federal Supply Class:
5305

National Item Identification Number:
014450426

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:
21105257453711NAVAL SEA SYSTEMS COMMAND
595-6401267 ITEM 4653711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
THREAD SERIES DESIGNATORUNRC
NOMINAL THREAD DIAMETER0.625 INCHES
THREAD QUANTITY PER INCH11
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.994 INCHES MINIMUM AND
1.176 INCHES MAXIMUM
FASTENER LENGTH1.500 INCHES NOMINAL
MATERIALPLASTIC POLYAMIDE LOCKING FEATURE
NICKEL ALLOY 400 FASTENER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FASTENER
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER1.112 INCHES MINIMUM AND
1.188 INCHES MAXIMUM
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND
84.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.375 INCHES NOMINAL
LOCKING FEATUREPATCH OR
PELLET OR
STRIP THREADS


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