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 6685-01-397-8677
NSN 5990-01-615-7823
NSN 5950-01-306-5369
NSN 5920-01-024-0592
NSN 6610-00-116-5725
NSN 5930-00-679-5879
NSN 5920-01-423-8410
NSN 6150-00-539-9812
NSN 5925-00-017-9718
NSN 5999-01-258-9215
NSN 5910-01-187-7967
NSN 5905-01-545-8925