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 6105-00-216-8866
NSN 6145-01-517-2842
NSN 5996-00-841-5534
NSN 5930-00-622-6262
NSN 6240-00-777-4263
NSN 6240-01-384-8802
NSN 5985-00-729-1600
NSN 6145-01-092-7023
NSN 5999-00-488-4274
NSN 6320-01-543-3238
NSN 5960-00-269-3023
NSN 6645-01-025-1002