5305-01-046-0561 SETSCREW Index 5306-01-046-0565 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-046-0562

Federal Supply Class:
5306

National Item Identification Number:
010460562

Description:
BOLT,SHEAR

Detail:
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.


Manufacturer Information:
MS21250H2007296906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
EXTENDED WASHER DIAMETER2.115 INCHES MINIMUM AND 2.125 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.259 INCHES MINIMUM AND 0.279 INCHES MAXIMUM
FASTENER LENGTH6.270 INCHES MINIMUM AND 6.290 INCHES MAXIMUM
GRIP DIAMETER1.2475 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM
GRIP LENGTH4.490 INCHES MINIMUM AND 4.510 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT1.145 INCHES MINIMUM AND 1.165 INCHES MAXIMUM
HEAD STYLEDOUBLE HEXAGON W/HOLE
HOLE CONFIGURATION STYLEHEXAGON FLATS
HOLE DIAMETER0.055 INCHES NOMINAL
HOLE QUANTITY4
HOLE TYPEDRILLED
MATERIALSTEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER1.250 INCHES
WIDTH BETWEEN FLATS1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH1.760 INCHES MINIMUM AND 1.800 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH12


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