5306-01-278-5072 BOLT,SHEAR Index 5305-01-278-5074 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-278-5073

Federal Supply Class:
5305

National Item Identification Number:
012785073

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:
77C712413P06503538LOCKHEED MARTIN CORPORATION
77C712413P06557472ALL MANUFACTURERS, INC.
77C712413P06570318ALLMETAL SCREW PRODUCTS CORP


Techincal Specification:
FASTENER LENGTH0.775 INCHES MINIMUM AND 0.895 INCHES MAXIMUM
HEAD DIAMETER0.312 INCHES NOMINAL
HEAD HEIGHT0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY 400 OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES
WIDTH ACROSS FLATS0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A
THREAD LENGTH0.630 INCHES MINIMUM AND 0.820 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH32


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