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 5999-00-923-8683
NSN 6620-01-430-4111
NSN 5975-01-115-8453
NSN 6645-01-111-8218
NSN 5985-01-597-8023
NSN 6150-01-450-3536
NSN 6320-01-643-0850
NSN 6130-01-617-3285
NSN 5965-00-122-6426
NSN 5930-01-024-8763
NSN 5910-00-917-3513
NSN 6105-01-422-1835