NSN 5306-00-144-0414
Part Details | CLOSE TOLERANCE BOLT
5306-00-144-0414 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.
Alternate Parts: AN178C30, 5306-00-144-0414, 00-144-0414, 5306001440414, 001440414
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
53 | NOV 01, 1968 | 00-144-0414 | 27851 ( BOLT, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON

Cross Reference | NSN 5306-00-144-0414
Part Number | Cage Code | Manufacturer |
---|---|---|
AN178C30 | 88044 | AERONAUTICAL STANDARDS GROUPDEPT OF NAVY AND AIR FORCE |
Technical Data | NSN 5306-00-144-0414
Characteristic | Specifications |
---|---|
THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
THREAD QUANTITY PER INCH | 20 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.750 INCHES MINIMUM AND 0.829 INCHES MAXIMUM |
FASTENER LENGTH | 3.078 INCHES MINIMUM AND 3.125 INCHES MAXIMUM |
MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
GRIP LENGTH | 2.296 INCHES MINIMUM AND 2.328 INCHES MAXIMUM |
GRIP DIAMETER | 0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM |