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 5835-01-005-2836
NSN 5985-00-174-8494
NSN 4140-01-082-9097
NSN 6685-01-438-1440
NSN 6645-00-216-6126
NSN 6685-01-244-3226
NSN 7035-00-529-3128
NSN 6135-01-200-5144
NSN 6145-01-535-8056
NSN 5915-00-649-0561
NSN 5960-01-512-0233
NSN 6620-01-646-0105