A bone plate , comprising: a plate body that defines a combination hole comprising a locking hole and a compression hole that intersect one another and each extends from an outer surface of the plate body to a bone-facing surface of the plate body , wherein the locking hole and the compression hole extend away from each other along a longitudinal axis, the plate body further defining 1) a locking surface that defines the locking hole , 2) a second surface that defines the compression hole , and 3) interface edges along an intersection boundary between the locking surface and the second surface ; wherein the locking surface further defines: first, second, and third columns sequentially located about a central axis of the locking hole , each column having a first side and a second side ; a first recess extending from the second side of the first column to the first side of the second column ; an additional recess extending from the second side of the third column to the first side of the first column ; plate threads that traverse each of the columns and at least portions of the first recess , the additional recess, and transition zones , wherein crests of the plate threads extend linearly from the first side to the second side of each column , characterized by transition zones between the first side of the second column and the second side of the third column , wherein the locking surface in the transition zones is elongated and extends to the intersection boundary a plate body that defines a combination hole comprising a locking hole and a compression hole that intersect one another and each extends from an outer surface of the plate body to a bone-facing surface of the plate body , wherein the locking hole and the compression hole extend away from each other along a longitudinal axis, the plate body further defining 1) a locking surface that defines the locking hole , 2) a second surface that defines the compression hole , and 3) interface edges along an intersection boundary between the locking surface and the second surface ; wherein the locking surface further defines: first, second, and third columns sequentially located about a central axis of the locking hole , each column having a first side and a second side ; a first recess extending from the second side of the first column to the first side of the second column ; an additional recess extending from the second side of the third column to the first side of the first column ; plate threads that traverse each of the columns and at least portions of the first recess , the additional recess, and transition zones , wherein crests of the plate threads extend linearly from the first side to the second side of each column , characterized by transition zones between the first side of the second column and the second side of the third column , wherein the locking surface in the transition zones is elongated and extends to the intersection boundary first, second, and third columns sequentially located about a central axis of the locking hole , each column having a first side and a second side ; a first recess extending from the second side of the first column to the first side of the second column ; an additional recess extending from the second side of the third column to the first side of the first column ; plate threads that traverse each of the columns and at least portions of the first recess , the additional recess, and transition zones , wherein crests of the plate threads extend linearly from the first side to the second side of each column , characterized by transition zones between the first side of the second column and the second side of the third column , wherein the locking surface in the transition zones is elongated and extends to the intersection boundary <EOS>