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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6240-01-377-5503
NSN 4140-01-648-2249
NSN 5915-00-067-8906
NSN 5930-00-887-0159
NSN 6610-00-968-8193
NSN 5895-01-512-1493
NSN 5905-01-346-1261
NSN 6685-01-537-9307
NSN 5950-01-252-9276
NSN 5910-01-012-8956
NSN 5920-01-501-5469
NSN 2925-01-408-2088