NSN 5306-01-058-8421

Part Details | CLOSE TOLERANCE BOLT

5306-01-058-8421 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: MS21297H12035, 5306-01-058-8421, 01-058-8421, 5306010588421, 010588421

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 02, 197801-058-842127851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-058-8421
Part Number Cage Code Manufacturer
MS21297H1203596906MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS
Technical Data | NSN 5306-01-058-8421
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.750 INCHES
THREAD QUANTITY PER INCH16
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.163 INCHES MINIMUM AND 1.213 INCHES MAXIMUM
FASTENER LENGTH3.361 INCHES MINIMUM AND 3.391 INCHES MAXIMUM
HEAD STYLE0 HEXAGON
HEAD HEIGHT0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM
EXTENDED WASHER DIAMETER1.384 INCHES MINIMUM AND 1.394 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.098 INCHES MINIMUM AND 0.118 INCHES MAXIMUM
GRIP LENGTH2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM
GRIP DIAMETER0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM