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 6685-01-028-3156
NSN 6240-01-090-2280
NSN 5950-01-525-8127
NSN 6130-00-611-7214
NSN 5985-01-160-3694
NSN 5855-01-257-5338
NSN 6220-00-610-9103
NSN 5999-01-306-1806
NSN 5925-00-113-5066
NSN 2925-01-394-9658
NSN 6645-01-063-8243
NSN 5925-01-422-6783