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 6220-01-059-8658
NSN 5855-01-070-8084
NSN 2925-01-562-1663
NSN 5965-01-397-7544
NSN 5915-00-932-3040
NSN 5855-00-560-0110
NSN 5920-01-357-9384
NSN 5835-00-851-6470
NSN 7035-01-410-9197
NSN 6220-00-832-6916
NSN 5895-01-206-2906
NSN 5925-01-267-8134