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 6110-00-456-9506
NSN 5835-01-017-7486
NSN 5935-00-402-5679
NSN 5855-01-551-7923
NSN 6220-00-671-0384
NSN 6145-01-323-4753
NSN 5965-01-160-7037
NSN 5965-01-210-7784
NSN 6685-01-032-4752
NSN 6620-01-443-8431
NSN 5999-01-487-7397
NSN 7035-00-020-2227