Material is per mil-s-1222h, heavy hex jam nut
No other part numbers with same form, fit, and function found.
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: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)
NSN 5835-01-313-3375
NSN 5945-00-644-5180
NSN 6320-00-853-1920
NSN 6610-01-136-4866
NSN 5965-00-671-4119
NSN 5925-01-592-4733
NSN 5985-01-512-5106
NSN 5920-01-569-2896
NSN 5990-00-791-4064
NSN 6105-01-428-8921
NSN 6135-01-127-0173
NSN 5895-00-264-5666