NSN 5306-01-287-0257

Part Details | SHEAR BOLT

5306-01-287-0257 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: 7020907058101, 70209-07058-101, 5306-01-287-0257, 01-287-0257, 5306012870257, 012870257

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 13, 198801-287-025715903 ( BOLT, SHEAR )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-287-0257
Part Number Cage Code Manufacturer
70209-07058-10178286SIKORSKY AIRCRAFT CORPORATIONDBA SIKORSKY
Technical Data | NSN 5306-01-287-0257
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.625 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD LENGTH0.640 INCHES NOMINAL
FASTENER LENGTH5.340 INCHES NOMINAL
HEAD STYLE HEXAGON
HEAD HEIGHT0.350 INCHES NOMINAL
WIDTH BETWEEN FLATS1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM
GRIP LENGTH4.500 MILLIMETERS NOMINAL
GRIP DIAMETER0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM
SPECIAL FEATURESSHOT PEEN,MAGNETIC PARTICLE INSPECT,SERIALIZE;END ITEM
END ITEM IDENTIFICATIONUH-60 HELICOPTER
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,RH ATTACHMENT-STABILATOR