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 6320-00-160-0899
NSN 6220-01-268-2913
NSN 7035-01-029-7221
NSN 6645-00-429-0172
NSN 5925-01-580-5744
NSN 5915-00-939-5893
NSN 5855-00-688-9954
NSN 6220-00-755-7546
NSN 5925-01-269-0789
NSN 6650-01-025-7425
NSN 6135-01-275-1363
NSN 5855-00-337-3679