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 6135-01-462-6040
NSN 5905-00-174-2382
NSN 6620-01-046-8623
NSN 5999-01-289-2410
NSN 6610-01-345-1110
NSN 6240-00-792-5469
NSN 6130-01-331-3055
NSN 5950-01-660-6897
NSN 6130-01-076-5612
NSN 5975-00-660-5962
NSN 5925-01-406-2806
NSN 7035-00-320-5644