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.
Classification: Zirconium and articles thereof nesoi
NSN 6145-01-209-9569
NSN 5905-01-220-3251
NSN 5996-00-222-4930
NSN 5945-01-077-3567
NSN 5925-01-653-3438
NSN 7035-01-466-5636
NSN 5990-01-193-0487
NSN 5895-00-799-6738
NSN 6150-01-381-0224
NSN 5925-01-586-3324
NSN 6320-00-174-1362
NSN 5999-00-151-9955