4730-14-404-9418 EMBOUT CALOTTE Index 5360-14-405-0331 SPRING,HELICAL,COMPRESSION

National Stock Number:
5306-14-404-9644

Federal Supply Class:
5306

National Item Identification Number:
144049644

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:
22201BE080030LF0111BUREAU NORMALISATION AERONAUTIQUEESPACE
22201BE080030LF0188BLANC AERO INDUSTRIES - GROUPE LISIAEROSPACE
22201BE080030LF0236SAINT CHAMOND GRANAT SA
22201BE080030LF0434ALIGN AEROSPACE FRANCE SAS
9325347230S4080PILATUS AIRCRAFT LTD
F300 0T 018 9805F6647SERVICE CENTRAL DES ACHATS DE LA MAINTENANCE
L22201-80-30BELF0111BUREAU NORMALISATION AERONAUTIQUEESPACE


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS4H
FASTENER LENGTH42.5 MILLIMETERS NOMINAL
GRIP DIAMETER7.972 MILLIMETERS MINIMUM AND 7.987 MILLIMETERS MAXIMUM
GRIP LENGTH30.0 MILLIMETERS NOMINAL
HEAD HEIGHT4.0 MILLIMETERS NOMINAL
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONF3025 AIR 9160C MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 30NCD16 OVERALL
MINIMUM TENSILE STRENGTH1080 MEGAPASCALS
MINIMUM YIELD STRENGTH880 MEGAPASCALS
NOMINAL THREAD DIAMETER8.0 MILLIMETERS
WIDTH BETWEEN FLATS13.0 MILLIMETERS NOMINAL
SURFACE FINISH0.8 MICROMETERS BEARING SURFACE OF HEAD
SURFACE FINISH0.8 MICROMETERS GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNF L 09-753 CODE L NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL AND CHROMATE OVERALL
TEST DATA DOCUMENTF3025-AIR 9173 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH12.5 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATORISO M
THREAD PITCH IN MILLIMETERS1.25


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