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 5855-01-074-6784
NSN 5960-01-340-4487
NSN 5975-01-520-9602
NSN 5910-01-310-9273
NSN 5965-00-227-7348
NSN 6685-01-322-5688
NSN 5990-00-727-0723
NSN 5975-01-208-2225
NSN 6685-01-388-8956
NSN 5925-01-395-0408
NSN 5999-00-650-1709
NSN 5905-00-838-1713