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National Stock Number:
5306-01-177-9731
Federal Supply Class:
5306
National Item Identification Number:
011779731
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:
| 104779627 | 058R3 | GE AVIATION SYSTEMS LLC | | 104779627 | 35012 | GE AVIATION SYSTEMS LLC | | 104779627 | K0654 | SAFRAN LANDING SYSTEMS UK LTD | | 104779627 | K5294 | GE AVIATION SYSTEMS LIMITED | | 104779627 | U7388 | TRIUMPH AEROSPACE OPERATIONS UK, LTD. |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.350 INCHES MINIMUM AND | | 0.360 INCHES MAXIMUM | | FASTENER LENGTH | 0.800 INCHES NOMINAL | | MATERIAL | STEEL COMP E4340 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.125 INCHES MINIMUM AND | | 0.140 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND | | 0.439 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | HEXAGON LONGITUDINAL HOLE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 4 | | HOLE DIAMETER | 1.05 MILLIMETERS MINIMUM AND | | 1.18 MILLIMETERS MAXIMUM | | GRIP LENGTH | 0.440 INCHES MINIMUM AND | | 0.450 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM |
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