Item must comply with requirements of defense supply center philadelphia production standard no. Po0153nrp
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 5999-00-741-5534
NSN 5930-01-652-7396
NSN 6650-00-119-9431
NSN 6650-01-068-3997
NSN 5925-01-459-5498
NSN 5935-00-588-0857
NSN 5895-00-070-8192
NSN 6645-01-298-1615
NSN 5990-01-328-2385
NSN 6685-00-459-7739
NSN 6240-00-428-4027
NSN 6130-00-858-0892