5305-00-526-0473 SCREW,CLOSE TOLERANCE Index 3120-00-526-0475 BUSHING,SLEEVE

National Stock Number:
5305-00-526-0474

Federal Supply Class:
5305

National Item Identification Number:
005260474

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:
15265V06-206710VALLEY-TODECO, INC.
15265V06-206725SPS TECHNOLOGIES, LLC
15265V06-206950HOWMET GLOBAL FASTENING SYSTEMS INC
15265V06-217446HUCK INTERNATIONAL, INC
15265V06-227624SPS TECHNOLOGIES LLC
15265V06-256878SPS TECHNOLOGIES, LLC
15265V06-292215HOWMET GLOBAL FASTENING SYSTEMS INC
15265V06-297907TEREX CORP
15265V06-298897LOCKHEED MARTIN CORP
LS15265V06-298897LOCKHEED MARTIN CORP


Techincal Specification:
FASTENER LENGTH0.386 INCHES MINIMUM AND 0.416 INCHES MAXIMUM
GRIP DIAMETER0.1365 INCHES MINIMUM AND 0.1375 INCHES MAXIMUM
GRIP LENGTH0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM
HEAD STYLEPAN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATIONNAS621,COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALTITANIUM ALLOY UNS R54520 OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.138 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES THREADS
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNJC


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