the top swedge is 7/16" X 2 1/2"

the pin is 1 3/16" down & 1/2" over from the edge

the box is 1 3/4" WIDE x 1 7/16" tall X 5/16" thick

these came out of Grand Rapids MIchigan prob 40 years ago, dont know who was using them then.

they take a key with a little larger than standard barrel dia to work

no screws just a lock

if you have any questions just ask E-79