5305-00-901-4412 SCREW,CLOSE TOLERANCE Index 5305-00-901-4418 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-901-4417

Federal Supply Class:
5305

National Item Identification Number:
009014417

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:
202-15500-4-1980378TRIUMPH AEROSTRUCTURES, LLC
AS110-04-1984256AVIBANK MFG., INC.
CA4850-04-1929372HOWMET GLOBAL FASTENING SYSTEMS INC.
VP1072-4-1970236TACTAIR FLUID CONTROLS INC
VP1072-4-1992215HOWMET GLOBAL FASTENING SYSTEMS INC


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.521 INCHES MINIMUM AND 1.537 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH1.570 INCHES NOMINAL
HARDNESS RATING50.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
HEAD STYLECROWNED HEXAGON
INTERNAL DRIVE STYLESLOT
LOCKING FEATUREPELLET GRIP
MATERIALSTEEL COMP 8740 OR STEEL COMP 4340 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE TREATMENTCADMIUM AND CHROMATE HEAD
SURFACE TREATMENTCADMIUM AND CHROMATE THREADS
SURFACE TREATMENTPASSIVATE SPRING
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.315 INCHES NOMINAL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH28
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM


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