NSN 5306-01-531-4022

Part Details | CLOSE TOLERANCE BOLT

5306-01-531-4022 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.

Alternate Parts: NAS6704PU19, 5306-01-531-4022, 01-531-4022, 5306015314022, 015314022

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUL 07, 200501-531-402227851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-531-4022
Part Number Cage Code Manufacturer
NAS6704PU1980205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
Technical Data | NSN 5306-01-531-4022
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.613 INCHES NOMINAL
FASTENER LENGTH2.038 INCHES NOMINAL
HEAD STYLE HEXAGON
HEAD HEIGHT0.125 INCHES NOMINAL
WIDTH BETWEEN FLATS0.434 INCHES NOMINAL
GRIP LENGTH1.613 INCHES NOMINAL
GRIP DIAMETER0.250 INCHES NOMINAL
SPECIAL FEATURESSELF-LOCKING WITH PLASTIC LOCK PER MIL-F-18240 AND QPL18240
END ITEM IDENTIFICATION1440-01-444-4239 MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
PART NAME ASSIGNED BY CONTROLLING AGENCYA286 CRES, LONG THREADS, CLOSE TOLERANCE HEX HEAD BULT