Nut, heavy hex, jam, .375-16 unc, 18-8sst
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 5965-01-371-1297
NSN 2925-01-113-6904
NSN 4140-01-125-1374
NSN 5835-01-247-2634
NSN 6610-00-791-4705
NSN 5905-01-608-5709
NSN 5975-00-276-7559
NSN 6620-00-602-5832
NSN 6110-01-514-8646
NSN 5915-01-012-3923
NSN 6220-01-004-1152
NSN 5960-01-623-9896