Pilot with no. 4-40unc-2b thd through 1 side
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 5985-01-442-8554
NSN 5945-01-322-3887
NSN 6220-01-535-0892
NSN 6220-01-279-1331
NSN 5925-01-544-6846
NSN 5915-01-602-9324
NSN 5960-01-173-7956
NSN 6650-01-126-2029
NSN 6685-01-495-3090
NSN 5855-00-631-4565
NSN 5960-00-138-9871
NSN 5960-01-365-8752