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 4140-01-608-6001
NSN 4140-00-320-1482
NSN 5910-00-891-2500
NSN 6110-00-084-5371
NSN 5975-00-989-0726
NSN 6645-01-218-3549
NSN 5985-01-118-4784
NSN 5855-01-335-8907
NSN 5905-01-388-8231
NSN 5960-00-988-2576
NSN 5855-01-603-9045
NSN 5998-01-242-9372