2-1/2 in. Od of rounded corners
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.)
Classification: Nuts of iron or steel
NSN 6110-01-495-1158
NSN 2925-01-443-1748
NSN 5920-00-524-2291
NSN 2925-00-480-9068
NSN 5950-00-926-0760
NSN 5895-01-649-3032
NSN 6110-01-504-7539
NSN 7035-01-217-3591
NSN 6320-01-560-7177
NSN 5935-00-900-5202
NSN 6685-00-557-0760
NSN 6105-00-285-2774