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National Stock Number:
5306-01-626-6163
Federal Supply Class:
5306
National Item Identification Number:
016266163
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:
| AIC688-3H7 | 06725 | SPS TECHNOLOGIES, LLC | | MB155-3H7 | 73197 | HI-SHEAR CORPORATION | | VCG0002-3H7 | 06710 | VALLEY-TODECO, INC. | | PBF1266-3H7 | 27624 | SPS TECHNOLOGIES LLC | | ST3M747-3H7 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.1900 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.331 INCHES NOMINAL | | FASTENER LENGTH | 0.753 INCHES MINIMUM AND | | 0.800 INCHES MAXIMUM | | MATERIAL | STEEL COMP XM-13 OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | SPLINE DRIVE SHEAR HEAD | | HEAD HEIGHT | 0.328 INCHES NOMINAL | | HEAD MINOR DIAMETER | 0.386 INCHES NOMINAL | | HOLE CONFIGURATION STYLE | SPLINE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 1 | | HOLE DIAMETER | 0.140 INCHES NOMINAL | | GRIP LENGTH | 0.438 INCHES NOMINAL | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1895 INCHES MAXIMUM | | POINT STYLE | FLAT | | POINT DIAMETER | 0.1885 INCHES NOMINAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, CLOSE TOLERANCE, SPLINE DRIVE, CRES (125 KSI FSU) |
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