Fatigue low load is 3120 and fatigue high load is 31200; service temperature is 350 degrees f; head to be marked with part number configuration per bacb30us standard
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: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)
NSN 5960-00-494-8937
NSN 6150-01-352-1784
NSN 5925-01-004-7609
NSN 5950-00-244-0498
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NSN 6220-01-279-6220
NSN 6130-00-860-9651
NSN 6240-01-017-7322
NSN 5920-00-642-9908
NSN 4140-01-444-8866
NSN 6685-01-358-5314
NSN 5999-01-631-7419