A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
Classification: Zirconium and articles thereof nesoi
NSN 6145-00-064-0072
NSN 6130-00-849-6298
NSN 5945-00-816-4481
NSN 5999-01-228-5880
NSN 5975-01-392-8472
NSN 5925-01-359-5440
NSN 5895-00-171-0412
NSN 7035-01-384-4383
NSN 6150-01-610-2199
NSN 5930-00-196-3849
NSN 6610-00-133-2733
NSN 6150-00-014-1683