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National Stock Number:
5306-01-289-9445
Federal Supply Class:
5306
National Item Identification Number:
012899445
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:
| 11697A05U014 | 59563 | REID PRODUCTS INC. | | STSBG004A05U14 | 06710 | VALLEY-TODECO, INC. | | STSBG004A05U14 | 06725 | SPS TECHNOLOGIES, LLC | | STSBG004A05U14 | 27624 | SPS TECHNOLOGIES LLC | | STSBG004A05U14 | 34742 | TYEE AIRCRAFT INC | | STSBG004A05U14 | 56878 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM | | FASTENER LENGTH | 1.375 INCHES NOMINAL | | FEATURES PROVIDED | CETYL ALCOHOL LUBRICANT | | GRIP DIAMETER | 0.311 INCHES NOMINAL | | GRIP LENGTH | 0.875 INCHES NOMINAL | | HEAD HEIGHT | 0.276 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | MATERIAL | STEEL COMP H11 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SPECIAL FEATURES | HEAT TREAT TO 260 KSI FTU;TEMPERATURE LIMIT 900 DEG F | | SURFACE TREATMENT | CADMIUM AND CHROMATE GRIP | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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