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 5915-00-974-9337
NSN 7035-01-096-8912
NSN 5855-01-100-3272
NSN 5895-01-453-6606
NSN 5990-01-095-8866
NSN 5905-01-623-6033
NSN 5930-01-255-3899
NSN 6135-01-499-9723
NSN 5905-01-655-9584
NSN 5996-01-514-1610
NSN 5945-01-430-3506
NSN 7035-00-142-9076