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 5990-01-527-7640
NSN 5960-00-372-4876
NSN 4140-01-301-7336
NSN 6645-00-758-4567
NSN 5960-01-397-8328
NSN 6320-00-937-5625
NSN 6145-01-500-9192
NSN 6110-01-309-6448
NSN 5960-01-392-6982
NSN 6685-01-126-8938
NSN 6685-00-531-3215
NSN 5999-01-536-7617