Structural hex 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.)
NSN 6645-01-553-8500
NSN 5895-00-806-8518
NSN 6145-00-806-9389
NSN 6135-01-260-7180
NSN 6320-01-562-1599
NSN 5985-00-536-3321
NSN 6320-01-519-7019
NSN 6645-01-535-7136
NSN 5985-01-510-0738
NSN 5965-01-378-7335
NSN 4140-01-435-5412
NSN 6145-01-259-8816