5305-01-124-1238 SCREW,CAP,SOCKET HEAD Index 5305-01-124-1240 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-124-1239

Federal Supply Class:
5305

National Item Identification Number:
011241239

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:
324-1694-05013499ROCKWELL COLLINS, INC.
324-1694-05070276ALLEN MFG CO SUB OF CHICAGO PNEUMATIC TOOL CO


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH38
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.429 INCHES NOMINAL
FASTENER LENGTH0.500 INCHES NOMINAL
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEROUND
HEAD DIAMETER0.437 INCHES MAXIMUM
HEAD HEIGHT0.132 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.156 INCHES NOMINAL


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