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National Stock Number: 5306-01-538-6424
Federal Supply Class: 5306
National Item Identification Number: 015386424
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:
BACB30LJ7-19 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
COLOR | GREEN OVERALL | FASTENER LENGTH | 12.406 INCHES MINIMUM AND 12.426 INCHES MAXIMUM | GRIP DIAMETER | 0.4354 INCHES MINIMUM AND 0.4360 INCHES MAXIMUM | GRIP LENGTH | 11.865 INCHES MINIMUM AND 11.885 INCHES MAXIMUM | HEAD HEIGHT | 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM | HEAD STYLE | DISHED HEXAGON | HOLE CONFIGURATION STYLE | HEXAGON CORNERS | NOMINAL THREAD DIAMETER | 0.4375 INCHES | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, HEX HEAD, 93 KSI SHEAR, SHORT THREAD, A286, NONLOCKING AND SELF-LOCKING | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | STEEL CORROSION RESISTING OVERALL | POINT LENGTH | 0.062 INCHES NOMINAL | POINT STYLE | FLAT | SPECIAL FEATURES | MANUFACTURER'S PART NUMBER BACB30NF7-19 REPLACED BY BACB30LJ7-19, REFERENCE CHAPTER 54-1, FIGURE AND ITEM NUMBER 9-48B, 9-48C, 9-48D, 24-57A | WIDTH BETWEEN FLATS | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416 ASSN STD 1ST TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | CADMIUM OVERALL | THREAD DIRECTION | RIGHT-HAND | THREAD CLASS | 3A | THREAD LENGTH | 0.541 INCHES NOMINAL | THREAD QUANTITY PER INCH | 20 | THREAD SERIES DESIGNATOR | UNJF |
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