Used on a wheel lug; counter terrorist assault platform
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 6320-00-116-3658
NSN 6645-01-109-8780
NSN 6610-01-156-0810
NSN 5905-01-598-0869
NSN 5925-01-203-6824
NSN 6240-01-463-8276
NSN 6135-01-334-3935
NSN 5895-01-157-9330
NSN 5920-01-121-9636
NSN 4140-01-303-9489
NSN 5975-01-212-6739
NSN 6145-01-537-7243