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National Stock Number:
5306-01-178-9307
Federal Supply Class:
5306
National Item Identification Number:
011789307
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:
| BM28630-4 | 17446 | HUCK INTERNATIONAL, INC | | BM28630-4 | 97928 | HUCK INTL INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.330 INCHES NOMINAL | | FASTENER LENGTH | 0.580 INCHES NOMINAL | | MATERIAL | STEEL COMP 8740 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | HEAD HEIGHT | 0.348 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.368 INCHES MINIMUM AND | | 0.377 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.526 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.082 INCHES NOMINAL | | LOCKING FEATURE | PATCH THREADS | | GRIP LENGTH | 0.250 INCHES NOMINAL | | GRIP DIAMETER | 0.3110 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM | | SPECIAL FEATURES | WITH SLOT 0.125 IN. DEEP ON THD END | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 17446 | | DESIGN CONTROL REFERENCE | BM28630-4 |
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