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National Stock Number:
5306-01-454-0318
Federal Supply Class:
5306
National Item Identification Number:
014540318
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:
| 5793302 FIND 48 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 6393072-5 | 31442 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 6393072-5 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.380 INCHES NOMINAL FIRST HOLE | | FASTENER LENGTH | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM | | GRIP DIAMETER | 0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM | | GRIP LENGTH | 1.900 INCHES MINIMUM AND 1.920 INCHES MAXIMUM | | HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 718 OVERALL | | NOMINAL THREAD DIAMETER | 0.625 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE | | SPECIAL FEATURES | SURFACE TREATMENT: ALUMIZITE "Z" SUPPLIED BY TIODIZE, CAGE 34568 | | WIDTH BETWEEN FLATS | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-85614 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.590 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 11 | | THREAD SERIES DESIGNATOR | UNC |
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