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 6685-01-332-1397
NSN 5915-01-320-2528
NSN 4140-00-145-7334
NSN 5920-01-433-1668
NSN 5905-01-600-0179
NSN 7035-00-275-5604
NSN 5920-01-284-1786
NSN 5996-00-829-2025
NSN 5895-01-573-1355
NSN 5905-01-644-6445
NSN 5855-01-235-5491
NSN 6685-01-344-4751