A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5996-01-570-8294
NSN 7035-01-552-4231
NSN 5965-01-146-6762
NSN 5920-01-608-5278
NSN 6620-00-335-9462
NSN 5905-01-537-4428
NSN 5999-01-343-5472
NSN 6320-01-317-3663
NSN 6650-01-287-4519
NSN 5905-00-170-0646
NSN 5975-01-589-2440
NSN 5950-01-381-2280