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 6135-00-451-0709
NSN 7035-00-140-0474
NSN 5950-01-610-3181
NSN 6130-01-521-3440
NSN 5985-00-607-0163
NSN 6150-01-364-1537
NSN 5855-01-027-1571
NSN 5915-01-551-3109
NSN 6135-01-067-8331
NSN 2925-01-519-3221
NSN 5965-01-361-9760
NSN 6135-01-597-7685