3990-01-449-8827 STORAGE AND RETRIEVAL MATERIAL S Index 5962-01-449-8829 MICROCIRCUIT,DIGITAL

National Stock Number:
5305-01-449-8828

Federal Supply Class:
5305

National Item Identification Number:
014498828

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:
21107491653711NAVAL SEA SYSTEMS COMMAND
566-6404324-1153711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
FASTENER LENGTH3.550 INCHES MINIMUM AND 3.750 INCHES MAXIMUM
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM FASTENER
HEAD HEIGHT1.734 INCHES MINIMUM AND 1.750 INCHES MAXIMUM
HEAD DIAMETER2.597 INCHES MINIMUM AND 2.625 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREPATCH OR PELLET OR STRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE FASTENER
MATERIALNICKEL ALLOY K-500 OR NICKEL ALLOY 502 FASTENER
MATERIALPLASTIC POLYAMIDE LOCKING FEATURE
MINIMUM TENSILE STRENGTH130000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER1.750 INCHES
WIDTH ACROSS FLATS1.250 INCHES NOMINAL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH3.750 INCHES MAXIMUM
THREAD QUANTITY PER INCH8
THREAD SERIES DESIGNATORUN


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