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National Stock Number:
5306-01-586-5269
Federal Supply Class:
5306
National Item Identification Number:
015865269
Description:
BOLT,CLOSE TOLERANCE
Detail:
An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.
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Manufacturer Information:
| 81607-6-22 | 56878 | SPS TECHNOLOGIES, LLC | | AIC6925-6-21 | 06725 | SPS TECHNOLOGIES, LLC | | HS5271-6-21 | 8V613 | THE BOEING COMPANY | | VCC0048 | 06170 | BAUMBACH E A MFG CO |
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Techincal Specification:
| FASTENER LENGTH | 2.375 INCHES MINIMUM AND 2.385 INCHES MAXIMUM | | GRIP DIAMETER | 0.343 INCHES MINIMUM AND 0.353 INCHES MAXIMUM | | GRIP LENGTH | 1.315 INCHES MINIMUM AND 1.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, DOUBLE HEXAGON, TENSION, 300,000 PSI MINIMUM TENSILE STRENGTH, ALLOY STEEL, 450 DEGREE F, 0.375-24 UNJF-3A | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 300000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-6887, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.000 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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