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 6685-01-023-7514
NSN 6320-00-194-4252
NSN 6320-00-110-8005
NSN 5920-00-466-3950
NSN 5895-01-516-3117
NSN 7035-01-398-9581
NSN 5895-01-534-3743
NSN 6110-01-613-1188
NSN 6105-00-285-2774
NSN 6130-00-649-8953
NSN 6220-01-571-0951
NSN 6145-00-190-7489