5305-01-167-4348 THUMBSCREW Index 5305-01-167-4350 SCREW,CLOSE TOLERANCE

National Stock Number:
5306-01-167-4349

Federal Supply Class:
5306

National Item Identification Number:
011674349

Description:
BOLT,SHEAR

Detail:
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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. A locking feature may be incorporated in the design of the head or threads. See BOLT, MACHINE and BOLT, CLEVIS.


Manufacturer Information:
NAS1785-6H1380205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
EXTENDED WASHER DIAMETER0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM
FASTENER LENGTH1.445 INCHES MINIMUM AND 1.465 INCHES MAXIMUM
GRIP DIAMETER0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM
GRIP LENGTH0.812 INCHES NOMINAL
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM
HEAD STYLEDOUBLE HEXAGON W/HOLE
HOLE CONFIGURATION STYLEDOUBLE HEXAGON LONGITUDINAL HOLE
HOLE DIAMETER0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM
HOLE QUANTITY4
HOLE TYPEDRILLED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP H11 OVERALL
MINIMUM TENSILE STRENGTH220000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.375 INCHES
SPECIFICATION/STANDARD DATA80205-NAS1785 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.560 INCHES MINIMUM AND 0.643 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH24


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