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 5960-00-409-9604
NSN 2925-01-328-4394
NSN 6610-00-958-0294
NSN 5910-01-536-9965
NSN 6150-01-156-1140
NSN 5985-01-255-1707
NSN 6620-00-608-1480
NSN 7035-01-311-7660
NSN 2925-00-163-9016
NSN 5965-01-512-5009
NSN 6645-00-943-9063
NSN 6135-01-122-4448