5306-01-367-9272 BOLT,CLOSE TOLERANCE Index 5305-01-367-9274 SCREW,CLOSE TOLERANCE

National Stock Number:
5306-01-367-9273

Federal Supply Class:
5306

National Item Identification Number:
013679273

Description:
BOLT,CLOSE TOLERANCE

Detail:
An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.


Manufacturer Information:
NAS620914153DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA
NAS6209-3480205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
FASTENER LENGTH2.704 INCHES MINIMUM AND 2.734 INCHES MAXIMUM
GRIP DIAMETER0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM
GRIP LENGTH2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.281 INCHES MINIMUM AND 0.296 INCHES MAXIMUM
HEAD STYLEDISHED HEXAGON
LOCKING FEATUREPATCH OR PELLET OR STRIP LOCKING FEATURE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALLMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE FASTENER
MATERIALSTEEL COMP 4340 OR STEEL COMP 8740 OVERALLPLASTIC POLYAMIDE (NYLON) LOCKING FEATURESTEEL COMP 4340 OR STEEL COMP 8740 FASTENER
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.562 INCHES
SPECIFICATION/STANDARD DATA80205-NAS6209 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WIDTH BETWEEN FLATS0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALLCADMIUM AND CHROMATE FASTENER
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.594 INCHES NOMINAL
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH18


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