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 6685-00-816-8838
NSN 4140-00-395-7006
NSN 6240-00-138-3082
NSN 6220-00-932-3622
NSN 6150-00-081-2063
NSN 5990-01-050-1102
NSN 6610-01-196-6388
NSN 5895-00-342-9581
NSN 6105-00-316-3833
NSN 4140-00-633-7540
NSN 5915-01-508-0682
NSN 5975-01-245-9429