5305-01-044-7472 SCREW,CLOSE TOLERANCE Index 4710-01-044-7475 TUBE,BENT,METALLIC

National Stock Number:
5305-01-044-7473

Federal Supply Class:
5305

National Item Identification Number:
010447473

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:
3M123-5-1117446HUCK INTERNATIONAL, INC
3M123-5-1128980THE BOEING COMPANY
3M123-5-1158998FASTENER INNOVATION TECHNOLOGY, INC.
3M123-5-1176301THE BOEING COMPANY
3M123-5-1180539SPS TECHNOLOGIES, LLC
3M123-5-1192215HOWMET GLOBAL FASTENING SYSTEMS INC
5429-5-1117446HUCK INTERNATIONAL, INC
E129-5-1117446HUCK INTERNATIONAL, INC
HT1029A-5-1156878SPS TECHNOLOGIES, LLC
HT123-5-1173197HI-SHEAR CORPORATION
HT1029A-5-1180539SPS TECHNOLOGIES, LLC
3M123-5-1197928HUCK INTL INC
E129-5-1197928HUCK INTL INC
5429-5-1197928HUCK INTL INC
HT4N-1106950HOWMET GLOBAL FASTENING SYSTEMS INC
HT5N1173197HI-SHEAR CORPORATION
HT4N-1192215HOWMET GLOBAL FASTENING SYSTEMS INC
HT123-5-11L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
FASTENER LENGTH1.203 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
GRIP LENGTH0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM
GRIP DIAMETER0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEHIGH-TORQUE
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNF


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