Per mcmaster carr part number has multiple sources and oem could not be provided
A metallic item, usually square or rectangular in cross section, usually longer in relation to its width and thickness, with or without a head, usually designed to fit into the pre-cut slots of two adjacent cylindrically shaped members, to prevent relative rotational movement between the two. It may have mounting holes or slots.
NSN 5905-01-463-9131
NSN 6610-00-388-0094
NSN 6620-01-633-8443
NSN 5930-00-881-4076
NSN 5960-01-340-4487
NSN 5999-00-170-4901
NSN 6130-00-395-7220
NSN 7035-00-541-8516
NSN 6240-01-360-6965
NSN 5835-01-225-3080
NSN 6610-01-430-5373
NSN 7035-01-558-2976