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.)
Classification: Nuts of iron or steel
NSN 6645-00-994-6664
NSN 5990-00-466-2952
NSN 6650-01-502-6761
NSN 6130-00-959-5800
NSN 6650-01-296-0883
NSN 5960-00-420-0418
NSN 5920-00-468-3074
NSN 5950-01-079-5481
NSN 5960-01-030-5345
NSN 5998-01-347-3566
NSN 5999-00-205-0918
NSN 6645-01-110-7397