5305-00-486-2580 SCREW,CLOSE TOLERANCE Index 5330-00-486-2586 GASKET

National Stock Number:
5305-00-486-2581

Federal Supply Class:
5305

National Item Identification Number:
004862581

Description:
SCREW,CLOSE TOLERANCE

Detail:
A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.


Manufacturer Information:
64040H10-1556878SPS TECHNOLOGIES, LLC
64040H10-1580539SPS TECHNOLOGIES, LLC
AIC1023H10-1506725SPS TECHNOLOGIES, LLC
C387H10-1506950HOWMET GLOBAL FASTENING SYSTEMS INC
C387H10-1581755LOCKHEED MARTIN CORPORATION
CS318642H10-1593907TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS
HR101H10-1573197HI-SHEAR CORPORATION
VT1039H10-1592215HOWMET GLOBAL FASTENING SYSTEMS INC
HR101H10-15L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE60.0 DEGREES NOMINAL
FASTENER LENGTH1.791 INCHES MINIMUM AND 1.821 INCHES MAXIMUM
GRIP DIAMETER0.6235 INCHES MINIMUM AND 0.6245 INCHES MAXIMUM
GRIP LENGTH0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM
HEAD DIAMETER1.007 INCHES MINIMUM AND 1.034 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEOFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP H11 OVERALL
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.625 INCHES
SPECIAL FEATURESBEARING SURFACE OF HEAD GROOVED TO 0.769 IN. MIN,0.771 IN. MAX DIA,0.155 IN. MIN,0.160 IN. MAX FROM TOP OF HEAD
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTNICKEL AND CADMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.843 INCHES MINIMUM AND 0.893 INCHES MAXIMUM
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNF


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