5310-01-388-4440 NUT,PLAIN,ROUND Index 5310-01-388-4442 WASHER,LOCK

National Stock Number:
5305-01-388-4441

Federal Supply Class:
5305

National Item Identification Number:
013884441

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:
38030L4F16B56878SPS TECHNOLOGIES, LLC
94702-E-4F-16B80539SPS TECHNOLOGIES, LLC


Techincal Specification:
COLORBLACK OVERALL
FASTENER LENGTH1.000 INCHES NOMINAL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
HEAD HEIGHT0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM
HEAD STYLEOVAL
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREPATCH THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F835 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIALPLASTIC NYLON LOCKING FEATURE
MATERIALSTEEL FASTENER
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
WIDTH ACROSS FLATS0.156 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENTOXIDE FASTENER
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.929 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNRF
THREAD QUANTITY PER INCH28


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