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 5975-01-514-5117
NSN 6685-01-470-5211
NSN 7035-00-679-9027
NSN 7035-00-275-5604
NSN 5990-01-421-3325
NSN 6150-01-646-3555
NSN 5855-00-477-9943
NSN 5965-01-181-5706
NSN 5930-01-208-3235
NSN 5996-00-991-7450
NSN 5925-00-536-7651
NSN 6220-01-070-0244