Case 590t dipper cylinder

I have to pack a 94 case 590t dipper cylinder tomorrow and wanted to know if anyone can tell me what size the piston bolt head is? the exploded view in parts shows it's 1 1/2 thick, so would that be 2 1/4 head? Just trying to make sure I have the right socket before I get into it. Ps I think it's the same for the boom cyl as well

- thanks

Case 590t dipper cylinder