7030-01-538-6423 SOFTWARE Index 1680-01-538-6425 INSULATION BLANKET,CABIN,AIRCRAF

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.


Manufacturer Information:
BACB30LJ7-1981205THE BOEING COMPANY


Techincal Specification:
COLORGREEN OVERALL
FASTENER LENGTH12.406 INCHES MINIMUM AND 12.426 INCHES MAXIMUM
GRIP DIAMETER0.4354 INCHES MINIMUM AND 0.4360 INCHES MAXIMUM
GRIP LENGTH11.865 INCHES MINIMUM AND 11.885 INCHES MAXIMUM
HEAD HEIGHT0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM
HEAD STYLEDISHED HEXAGON
HOLE CONFIGURATION STYLEHEXAGON CORNERS
NOMINAL THREAD DIAMETER0.4375 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT, HEX HEAD, 93 KSI SHEAR, SHORT THREAD, A286, NONLOCKING AND SELF-LOCKING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
POINT LENGTH0.062 INCHES NOMINAL
POINT STYLEFLAT
SPECIAL FEATURESMANUFACTURER'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 FLATS0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS-QQ-P-416 ASSN STD 1ST TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.541 INCHES NOMINAL
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNJF


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