NSN 5306-01-612-0688

Part Details | CLOSE TOLERANCE BOLT

5306-01-612-0688 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: 201010829, 20-101-08-29, 201010829, 20-101-08-29, 1256340829, 125634-08-29, 5306-01-612-0688, 01-612-0688, 5306016120688, 016120688

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 02, 201201-612-068827851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DISHED HEXAGON

Cross Reference | NSN 5306-01-612-0688
Part Number Cage Code Manufacturer
20-101-08-2997499BELL HELICOPTER TEXTRON INC.DBA BELL HELICOPTER
20-101-08-2956878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
125634-08-2956878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
Technical Data | NSN 5306-01-612-0688
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.500 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.638 INCHES NOMINAL
FASTENER LENGTH2.730 INCHES NOMINAL
MINIMUM TENSILE STRENGTH25100 POUNDS PER SQUARE INCH
HEAD STYLE DISHED HEXAGON
HEAD HEIGHT0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
GRIP LENGTH1.859 INCHES MINIMUM AND 1.875 INCHES MAXIMUM
GRIP DIAMETER0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM
FEATURES PROVIDED SEALING RING
SPECIAL FEATURESSHANK DOUBLE SHEAR STRENGTH AT 51800 LBS MIN; NICKEL ALLOY MATL RATED AT 220 KSI
END ITEM IDENTIFICATIONNAVAIR REQUIREMENTS
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,SELF RETAINING,IMPEDANCE TYPE,NICKEL ALLOY 718