NSN 5306-01-628-6585

Part Details | CLOSE TOLERANCE BOLT

5306-01-628-6585 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: ST3M571828, ST3M571-8-28, MB84828, MB84-8-28, 74328828, 74328-8-28, AIC752828, AIC752-8-28, VAL23033828, VAL23033-8-28, 5306-01-628-6585, 01-628-6585, 5306016286585, 016286585

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUN 04, 201401-628-658527851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON EXTENDED WASHER

FLAT

Cross Reference | NSN 5306-01-628-6585
Part Number Cage Code Manufacturer
ST3M571-8-2876301BOEING COMPANY, THEDBA BOEING
MB84-8-2873197HI-SHEAR CORPORATION
74328-8-2856878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
AIC752-8-2806725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
VAL23033-8-2806710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-01-628-6585
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.500 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.767 INCHES NOMINAL
FASTENER LENGTH2.502 INCHES MINIMUM AND 2.532 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH19640 POUNDS PER SQUARE INCH
HEAD STYLE DOUBLE HEXAGON EXTENDED WASHER
HEAD HEIGHT0.504 INCHES NOMINAL
WIDTH BETWEEN FLATS0.632 INCHES NOMINAL
EXTENDED WASHER DIAMETER0.827 INCHES MINIMUM AND 0.837 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.123 INCHES NOMINAL
GRIP LENGTH1.750 INCHES NOMINAL
GRIP DIAMETER0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM
POINT STYLE FLAT
POINT LENGTH0.060 INCHES NOMINAL
POINT CHAMFER ANGLE45.0 DEGREES NOMINAL
END ITEM IDENTIFICATIONF-15SA
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT, CLOSE TOLERANCE, 12 POINT, FLANGE HEAD, 220 KSI FTU, CRES