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 5945-01-581-6298
NSN 5905-01-123-8782
NSN 5975-01-540-6758
NSN 5920-01-138-6772
NSN 5996-01-588-6414
NSN 6685-00-362-1649
NSN 5915-00-087-9888
NSN 5925-01-596-1285
NSN 5950-01-530-0855
NSN 6645-00-854-7505
NSN 7035-00-585-2113
NSN 5945-00-579-0243