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National Stock Number:
5306-01-318-9243
Federal Supply Class:
5306
National Item Identification Number:
013189243
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:
| 4074030 | 77445 | RTX CORPORATION | | 5306PL1499197 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.425 INCHES NOMINAL | | FASTENER LENGTH | 1.240 INCHES MINIMUM AND | | 1.260 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | PWA96,CAGE 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | HEAD STYLE | TEE NO. 6 | | HEAD HEIGHT | 0.085 INCHES MINIMUM AND | | 0.095 INCHES MAXIMUM | | HEAD LENGTH | 0.430 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.430 INCHES NOMINAL | | CHAMFER ANGLE | 40.0 DEGREES MINIMUM AND | | 50.0 DEGREES MAXIMUM | | GRIP LENGTH | 0.790 INCHES MINIMUM AND | | 0.860 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1890 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | 63.0 MICROINCHES GRIP | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.115 INCHES NOMINAL FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.065 INCHES MINIMUM AND | | 0.072 INCHES MAXIMUM FIRST HOLE | | SPECIAL FEATURES | CHAMFERRED 0.015-0.025 IN. ON ALLFOUR BOTTOM EDGES OF HEAD;THREAD MODIFIED 0.1810-0.1870 IN. MAJOR DIA | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 77445 | | DESIGN CONTROL REFERENCE | 4074030 |
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