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 5996-00-494-6920
NSN 5965-01-256-0059
NSN 5965-01-651-8488
NSN 6110-00-845-0524
NSN 6220-01-218-9214
NSN 4140-01-313-3733
NSN 5996-00-896-7086
NSN 6135-01-026-9960
NSN 5945-00-215-0221
NSN 5950-00-106-3298
NSN 6685-01-645-6208
NSN 6130-01-400-6123