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 5905-01-070-5286
NSN 5945-01-431-8124
NSN 6650-00-535-6923
NSN 5960-01-065-0273
NSN 6220-00-686-5328
NSN 6685-00-116-2839
NSN 6130-01-310-9465
NSN 6650-01-325-8316
NSN 6650-00-337-7464
NSN 6645-01-437-9017
NSN 5975-01-235-7489
NSN 5915-01-238-1120