NSN 5306-00-009-8518

Part Details | CLOSE TOLERANCE BOLT

5306-00-009-8518 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: A1126E, A112-6E, 5306-00-009-8518, 00-009-8518, 5306000098518, 000098518

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 02, 197200-009-851827851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-00-009-8518
Part Number Cage Code Manufacturer
A112-6EK7766BRITISH STANDARDS INSTITUTION
Technical Data | NSN 5306-00-009-8518
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.299 INCHES MINIMUM AND 0.329 INCHES MAXIMUM
FASTENER LENGTH1.000 INCHES MINIMUM AND 1.040 INCHES MAXIMUM
HEAD STYLE HEXAGON
HEAD HEIGHT0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
GRIP LENGTH0.671 INCHES MINIMUM AND 0.701 INCHES MAXIMUM
GRIP DIAMETER0.2493 INCHES MINIMUM AND 0.2498 INCHES MAXIMUM
FEATURES PROVIDED FINISHED HEAD