NSN 5306-01-618-6781

Part Details | SHEAR BOLT

5306-01-618-6781 A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See BOLT, MACHINE and BOLT, CLEVIS.

Alternate Parts: 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 201311, 20-131-1, 5306-01-618-6781, 01-618-6781, 5306016186781, 016186781

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 01, 201301-618-678115903 ( BOLT, SHEAR )
REFERENCE DRAWINGS & PICTURES

HEXAGON

HEXAGON CORNERS

Cross Reference | NSN 5306-01-618-6781
Part Number Cage Code Manufacturer
20-131-197499BELL HELICOPTER TEXTRON INC.DBA BELL HELICOPTER
20-131-13N278BRIARWOOD FASTENERS, INC.
20-131-11VSL7HOUSTON PRECISION FASTENERS I, LP
20-131-11CNU4JOHN HASSALL LLCDBA SKY AEROSPACE PRODUCTS
20-131-10UCY9M.S. AEROSPACE INC.
20-131-159563REID PRODUCTS INC.DBA REID PRODUCTS
20-131-10K6Z0SATURN FASTENERS INCDIV ACUMENT
20-131-116258SPACE-LOK, INC.
20-131-156878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
20-131-106725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
20-131-127624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
20-131-106710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-01-618-6781
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.960 INCHES NOMINAL
FASTENER LENGTH1.435 INCHES MINIMUM AND 1.465 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH260000 POUNDS PER SQUARE INCH
HEAD STYLE HEXAGON
HEAD HEIGHT0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM
CHAMFER ANGLE10.0 DEGREES MINIMUM AND 20.0 DEGREES MAXIMUM
HOLE CONFIGURATION STYLE HEXAGON CORNERS
HOLE TYPE DRILLED
HOLE QUANTITY3
HOLE DIAMETER0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
GRIP LENGTH0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
GRIP DIAMETER0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM
FEATURES PROVIDED DRY FILM LUBRICANT
SPECIAL FEATURESTHIS BOLT INTENDED TO BE USED FOR PURPOSE OF PROVIDING PRELOAD IN CONJUNCTION WITH A MAST NUT IN ROTOR SYSTEMS SHOULD NOT BE USED IN STANDARD SHEAR/TENSION APPLICATIONS; SEE DRAWING FOR THREAD AND PITCH DETAILS
END ITEM IDENTIFICATIONMODEL CODE FOR THE V-22 AIRCRAFT
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,HEX HEAD, SPECIAL THREAD LENGTHS, COBALT-NICKEL ALLOY MP35N, 260 KSI FTU, (MAST NUT APPLICATIONS)