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 5996-00-830-8976
NSN 6135-01-608-3470
NSN 5985-00-186-2236
NSN 2925-00-084-8462
NSN 5895-01-634-0630
NSN 5999-01-393-0736
NSN 5905-00-519-0582
NSN 6650-00-246-3751
NSN 6220-01-555-7860
NSN 6685-01-006-3592
NSN 5915-01-010-3866
NSN 5985-00-471-1714