This bolt intended to be used for purpose of providing preload in conjunction with a mast nut in rotor systems should not be used in standard shear/tension applications; see drawing for thread and pitch details
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
Classification: Cobalt, wrought, and articles thereof
NSN 5915-01-221-9117
NSN 5835-00-510-0890
NSN 5960-01-229-2692
NSN 5915-01-254-3810
NSN 5895-01-594-0619
NSN 5975-00-908-1556
NSN 5960-00-382-6012
NSN 6320-00-456-2092
NSN 2925-01-502-9903
NSN 6105-01-555-8479
NSN 6610-01-459-7535
NSN 5930-01-014-3643