NSN 5306-01-625-8544

Part Details | CLOSE TOLERANCE BOLT

5306-01-625-8544 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: ST3M453326, ST3M453-3-26, 5306-01-625-8544, 01-625-8544, 5306016258544, 016258544

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53FEB 18, 201401-625-854427851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON

FLAT

Cross Reference | NSN 5306-01-625-8544
Part Number Cage Code Manufacturer
ST3M453-3-2676301BOEING COMPANY, THEDBA BOEING
Technical Data | NSN 5306-01-625-8544
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.1900 INCHES
THREAD QUANTITY PER INCHN32
THREAD CLASSR3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.331 INCHES NOMINAL
FASTENER LENGTH1.940 INCHES MINIMUM AND 1.987 INCHES MAXIMUM
HEAD STYLE DOUBLE HEXAGON
HEAD HEIGHT0.140 INCHES NOMINAL
WIDTH BETWEEN FLATS0.376 INCHES NOMINAL
GRIP LENGTH1.625 INCHES NOMINAL
GRIP DIAMETER0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
POINT STYLE9 FLAT
POINT DIAMETER0.1900 INCHES NOMINAL
END ITEM IDENTIFICATIONF-15SA
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT, CLOSE TOLERANCE, DOUBLE HEX HEAD