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 6135-01-388-2761
NSN 6105-00-042-4469
NSN 2925-01-085-0691
NSN 5985-01-535-7511
NSN 6320-01-278-9832
NSN 6110-00-840-6560
NSN 5996-01-378-3748
NSN 6650-01-225-7284
NSN 6610-01-379-5475
NSN 5925-01-299-6612
NSN 5910-01-492-6028
NSN 6135-01-545-5519