Design mil-dtl-01222 type iii style a or b
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 5998-00-538-5765
NSN 5925-00-819-3985
NSN 5985-00-754-0658
NSN 5935-01-431-0754
NSN 6105-01-275-2146
NSN 5996-01-450-9131
NSN 6645-01-526-0379
NSN 2925-01-385-6661
NSN 5950-01-326-7667
NSN 5920-01-155-1128
NSN 6135-01-351-2690
NSN 5990-01-361-6424