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National Stock Number:
5306-00-627-3175
Federal Supply Class:
5306
National Item Identification Number:
006273175
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:
| 5306PL0626039 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH | | J431P124A | 07482 | GENERAL ELECTRIC COMPANY |
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Techincal Specification:
| EXTENDED WASHER THICKNESS | 0.173 INCHES MINIMUM AND 0.183 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM | | FASTENER LENGTH | 4.610 INCHES MINIMUM AND 4.630 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD | | GRIP DIAMETER | 0.7490 INCHES MINIMUM AND 0.7495 INCHES MAXIMUM | | GRIP LENGTH | 3.245 INCHES MINIMUM AND 3.255 INCHES MAXIMUM | | HEAD HEIGHT | 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | MATERIAL | NICKEL ALLOY 718 OVERALL | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | WIDTH BETWEEN FLATS | 0.812 INCHES NOMINAL | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 1.355 INCHES MINIMUM AND 1.385 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 16 |
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