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 6645-00-274-5670
NSN 6130-00-778-9793
NSN 5950-01-440-9379
NSN 7035-01-123-8723
NSN 6645-01-010-3746
NSN 5910-00-473-3470
NSN 5999-01-469-7948
NSN 5920-00-557-5033
NSN 5930-01-143-5404
NSN 5996-01-455-7666
NSN 5998-00-070-1827
NSN 6130-00-475-0336