4820-14-387-2629 VALVE,CHECK Index 5305-14-387-2660 SCREW,MACHINE

National Stock Number:
5306-14-387-2659

Federal Supply Class:
5306

National Item Identification Number:
143872659

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:
22202TK120065XF0188BLANC AERO INDUSTRIES - GROUPE LISIAEROSPACE
22202TK120065XF0236SAINT CHAMOND GRANAT SA
22202TK120065XF0434ALIGN AEROSPACE FRANCE SAS


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS4H
FASTENER LENGTH77.5 MILLIMETERS NOMINAL
GRIP DIAMETER11.966 MILLIMETERS MINIMUM AND 11.984 MILLIMETERS MAXIMUM
GRIP LENGTH65.0 MILLIMETERS NOMINAL
HEAD HEIGHT6.0 MILLIMETERS NOMINAL
HEAD STYLEHEXAGON
HOLE CONFIGURATION STYLEHEXAGON FLATS
HOLE DIAMETER2.0 MILLIMETERS NOMINAL
HOLE QUANTITY1
HOLE TYPEDRILLED
MATERIAL DOCUMENT AND CLASSIFICATIONF3025 AIR 9183 MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALTITANIUM ALLOY T-A6V OVERALL
MINIMUM TENSILE STRENGTH880 MEGAPASCALS
MINIMUM YIELD STRENGTH820 MEGAPASCALS
NOMINAL THREAD DIAMETER12.0 MILLIMETERS
WIDTH BETWEEN FLATS19.0 MILLIMETERS NOMINAL
SURFACE FINISH0.8 MICROMETERS BEARING SURFACE OF HEAD
SURFACE FINISH0.8 MICROMETERS GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNF L 09-753 CODE X NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL AND VARNISH OVERALL AND DISULFIDE MOLYBDENUM OVERALL
TEST DATA DOCUMENTF3025-AIR 9184 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 MILLIMETERS1.5


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