Hy Grigg, The o.e.m. and Eaton numbers for those pins are,
two lock pin type 2251849 = Eaton 32427
single lock pin type 3740734 Eaton 44774
this part number is in the book as the pin for the largest tandem which is listed as also a 1.109" pin 3743886 Eaton 44599, I hope some of those help you find something.