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 6130-01-160-8430
NSN 6130-01-612-5111
NSN 5905-01-079-3061
NSN 6110-01-264-5556
NSN 5915-01-136-4035
NSN 5945-01-290-2437
NSN 6645-01-101-3696
NSN 5945-01-036-6578
NSN 6150-01-312-4179
NSN 5960-01-473-9203
NSN 6240-01-547-2026
NSN 5945-01-420-1323