5305-00-687-6278 SCREW,MACHINE Index 5306-00-687-6284 BOLT,SHOULDER

National Stock Number:
5305-00-687-6281

Federal Supply Class:
5305

National Item Identification Number:
006876281

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:
NK509-10-1026233NYLOK LLC
NKS24694S5226233NYLOK LLC


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.190 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.437 INCHES MINIMUM
FASTENER LENGTH0.656 INCHES NOMINAL
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND
32.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.327 INCHES MINIMUM AND
0.385 INCHES MAXIMUM
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
LOCKING FEATUREPELLET THREADS
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT


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