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 5925-00-925-2164
NSN 6240-01-009-0363
NSN 2925-01-542-5671
NSN 2925-01-446-6976
NSN 5975-00-156-5737
NSN 4140-01-056-3654
NSN 5965-01-354-9834
NSN 7035-00-360-2008
NSN 7035-00-870-0290
NSN 6685-00-085-7802
NSN 5915-00-138-0185
NSN 5985-00-989-2675