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: Nuts of iron or steel
NSN 5998-01-149-2618
NSN 6220-00-660-5539
NSN 5935-01-206-3744
NSN 6685-01-284-4110
NSN 5925-00-194-5072
NSN 5905-01-116-8934
NSN 5999-01-139-5975
NSN 5998-01-536-9847
NSN 5960-00-237-6917
NSN 6145-00-920-1220
NSN 5990-00-499-7535
NSN 5990-01-442-3520