A spring pack assembly (60, 1100, 90) for a punch tool, the assembly comprising: a canister sidewall (600, 1200, 900) extending about a central longitudinal axis (6, 11, 1) of the assembly; and an adjustment subassembly (650, 750,1150, 950) being coupled to the canister sidewall and comprising a punch head (655, 1155, 955), an engagement sidewall (613, 1113,913), a locking member (656, 956, 1156) and a release member (652, 1152, 952); wherein the punch head includes a threaded surface (615, 1115, 915) adapted to engage a mating threaded surface of either a punch body or a punch holder, such that, when the punch body/holder is mated with the punch head, a rotation of the punch head will move the punch body/holder along the central longitudinal axis of the spring pack assembly; the engagement sidewall surrounds a portion of the punch head and includes a plurality of locking features (653, 1153, 953) spaced apart, from one another, about a circumference of the engagement sidewall, each of the locking features being sized to engage the locking member; the locking member is biased with respect to the punch head, in a first position, where the locking member is engaged with one of the locking features of the engagement sidewall, so as to prevent the rotation of the punch head; and the release member includes an externally accessible actuation interface (612, 1152', 952'), characterized in that the actuation interface being adapted to receive a force for rotating the release member about the central longitudinal axis of the assembly and, thereby, move the locking member from the first, biased, position to a second position, where the locking member is released from engagement with the engagement sidewall, so as to allow the rotation of the punch head. a canister sidewall (600, 1200, 900) extending about a central longitudinal axis (6, 11, 1) of the assembly; and an adjustment subassembly (650, 750,1150, 950) being coupled to the canister sidewall and comprising a punch head (655, 1155, 955), an engagement sidewall (613, 1113,913), a locking member (656, 956, 1156) and a release member (652, 1152, 952); wherein the punch head includes a threaded surface (615, 1115, 915) adapted to engage a mating threaded surface of either a punch body or a punch holder, such that, when the punch body/holder is mated with the punch head, a rotation of the punch head will move the punch body/holder along the central longitudinal axis of the spring pack assembly; the engagement sidewall surrounds a portion of the punch head and includes a plurality of locking features (653, 1153, 953) spaced apart, from one another, about a circumference of the engagement sidewall, each of the locking features being sized to engage the locking member; the locking member is biased with respect to the punch head, in a first position, where the locking member is engaged with one of the locking features of the engagement sidewall, so as to prevent the rotation of the punch head; and the release member includes an externally accessible actuation interface (612, 1152', 952'), characterized in that the actuation interface being adapted to receive a force for rotating the release member about the central longitudinal axis of the assembly and, thereby, move the locking member from the first, biased, position to a second position, where the locking member is released from engagement with the engagement sidewall, so as to allow the rotation of the punch head.