NSN 5306-01-144-3908

Part Details | CLOSE TOLERANCE BOLT

5306-01-144-3908 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: 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 3M9187H45, 3M918-7H45, 5306-01-144-3908, 01-144-3908, 5306011443908, 011443908

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 20, 198201-144-390827851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

DOUBLE HEXAGON LONGITUDINAL HOLE

Cross Reference | NSN 5306-01-144-3908
Part Number Cage Code Manufacturer
3M918-7H4592215ARCONIC GLOBAL FASTENERS & RINGS,INC.
3M918-7H4576301BOEING COMPANY, THEDBA BOEING
3M918-7H4573197HI-SHEAR CORPORATION
3M918-7H4517446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
3M918-7H4597928HUCK INTL INC
3M918-7H45L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
3M918-7H4556878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
3M918-7H4506725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
3M918-7H4527624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
3M918-7H4506710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-01-144-3908
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH2.215 INCHES MINIMUM AND 2.265 INCHES MAXIMUM
FASTENER LENGTH5.037 INCHES MINIMUM AND 5.067 INCHES MAXIMUM
HEAD STYLE0 HEXAGON
HEAD HEIGHT0.425 INCHES MINIMUM AND 0.445 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
EXTENDED WASHER DIAMETER0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.089 INCHES MINIMUM AND 0.109 INCHES MAXIMUM
HOLE CONFIGURATION STYLE DOUBLE HEXAGON LONGITUDINAL HOLE
HOLE TYPE DRILLED
HOLE QUANTITY2
HOLE DIAMETER0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM
GRIP LENGTH2.802 INCHES MINIMUM AND 2.822 INCHES MAXIMUM
GRIP DIAMETER0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM
SPECIAL FEATURESPOINT ON THD END 0.370 IN. LG BY 15 DEG