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National Stock Number:
5306-01-262-6732
Federal Supply Class:
5306
National Item Identification Number:
012626732
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.
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Manufacturer Information:
| MS21250H06034 | 71867 | DE HAVILLAND AIRCRAFT OF CANADA LIMITED | | MS21250H06034 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.091 INCHES NOMINAL | | FASTENER LENGTH | 2.770 INCHES NOMINAL | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 0.388 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON FLATS | | HOLE DIAMETER | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM | | HOLE QUANTITY | 1 | | HOLE TYPE | DRILLED | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE AND AISI ASSN STD 1ST MATERIAL RESPONSE OR MIL-S5000 MIL SPEC 2ND MATERIAL RESPONSE AND AISI ASSN STD 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE AND AISI ASSN STD 3RD MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE AND AISI ASSN STD 4TH MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.3750 INCHES | | WIDTH BETWEEN FLATS | 0.4375 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY2 CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.625 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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