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 5999-00-811-9893
NSN 5999-00-327-0240
NSN 6620-01-214-7520
NSN 6320-01-116-3980
NSN 6105-01-327-8372
NSN 5985-00-950-0249
NSN 6685-01-441-3145
NSN 5975-01-083-3243
NSN 4140-00-859-2412
NSN 6105-00-757-6356
NSN 6620-01-100-0077
NSN 5855-00-494-9581