5310-01-445-9868 WASHER,LOCK Index 5998-01-445-9870 CIRCUIT CARD ASSEMBLY

National Stock Number:
5305-01-445-9869

Federal Supply Class:
5305

National Item Identification Number:
014459869

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:
21107327653711NAVAL SEA SYSTEMS COMMAND
801-6404978 FIND 453711NAVAL SEA SYSTEMS COMMAND
801-6404978-453711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
THREAD SERIES DESIGNATORUNRC
NOMINAL THREAD DIAMETER0.875 INCHES
THREAD QUANTITY PER INCH9
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH2.250 INCHES MINIMUM
FASTENER LENGTH7.500 INCHES NOMINAL
MATERIALPLASTIC POLYAMIDE LOCKING FEATURE
NICKEL ALLOY 400 FASTENER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FASTENER
HARDNESS RATING80.0 ROCKWELL B MINIMUM FASTENER
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH40000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER1.293 INCHES MINIMUM AND
1.312 INCHES MAXIMUM
HEAD HEIGHT0.864 INCHES MINIMUM AND
0.875 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.750 INCHES MINIMUM
LOCKING FEATUREPATCH OR
PELLET OR
STRIP THREADS


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