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 5855-01-295-2313
NSN 5950-01-442-4140
NSN 5985-01-658-4126
NSN 6105-00-368-0066
NSN 6135-01-555-4283
NSN 5930-00-846-2077
NSN 6685-00-334-6583
NSN 5985-01-113-7837
NSN 6610-01-492-1649
NSN 6240-01-437-8991
NSN 6105-01-025-1497
NSN 5965-00-289-6280