0.375-16 brass jam 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 6130-00-079-1269
NSN 6240-00-753-2031
NSN 6220-01-056-5169
NSN 6110-01-010-4551
NSN 6130-00-503-5099
NSN 6110-01-447-3909
NSN 6645-00-075-4764
NSN 5996-01-126-7238
NSN 6150-01-391-6675
NSN 6150-01-008-4109
NSN 6620-00-555-3992
NSN 2925-01-181-3972