5305-01-266-8539 SCREW,CAP,SOCKET HEAD Index 5305-01-266-8541 SETSCREW

National Stock Number:
5305-01-266-8540

Federal Supply Class:
5305

National Item Identification Number:
012668540

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:
7915810-0017910NYLOK LLC
7915810-0090536LOCKHEED MARTIN CORP


Techincal Specification:
COLORBLACK FASTENER
FASTENER LENGTH0.850 INCHES MINIMUM AND 0.880 INCHES MAXIMUM
HEAD DIAMETER0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM
HEAD HEIGHT0.086 INCHES MINIMUM AND 0.106 INCHES MAXIMUM
HEAD STYLEBUTTON
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREPATCH THREADS
MATERIALPLASTIC LOCKING FEATURE
MATERIALSTEEL CORROSION RESISTING FASTENER
NOMINAL THREAD DIAMETER0.190 INCHES
WIDTH ACROSS FLATS0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13724 CL 4 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENTOXIDE FASTENER
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.250 INCHES NOMINAL
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNF


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