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National Stock Number:
5306-00-878-0330
Federal Supply Class:
5306
National Item Identification Number:
008780330
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:
| EWSB26-7-48 | 56878 | SPS TECHNOLOGIES, LLC | | EWSB26-7-48 | 80539 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.775 INCHES MINIMUM AND 3.357 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 3.479 INCHES MINIMUM AND 3.526 INCHES MAXIMUM | | GRIP DIAMETER | 0.4358 INCHES MINIMUM AND 0.4367 INCHES MAXIMUM | | GRIP LENGTH | 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM | | HEAD HEIGHT | 0.247 INCHES MINIMUM AND 0.267 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | SPS-M-107,FSCM 56878 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.096 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE | | SINGLE SHEAR STRENGTH | 156000 POUNDS PER SQUARE INCH | | WIDTH BETWEEN FLATS | 0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837,TYPE 1,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.469 INCHES MINIMUM AND 0.536 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
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