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 5920-00-296-7015
NSN 2925-01-519-1707
NSN 5965-00-493-6008
NSN 5935-01-578-0733
NSN 5935-00-690-0460
NSN 5935-01-519-8366
NSN 6645-01-452-3354
NSN 5935-01-451-5982
NSN 6620-00-924-4369
NSN 6110-01-266-5270
NSN 5999-01-437-7755
NSN 5905-01-480-6863