A brake release mechanism (24, 124) for a spring brake actuator, in particular a parking or emergency spring brake actuator for use in a commercial vehicle, said release mechanism (24, 124) comprising: - a brake release bolt (30, 130) having a threaded portion (34, 134) and an operating section for operating the release bolt (30, 130) when inserted into a spring brake actuator, - a running nut (12, 112) engaging the threaded portion (34, 134), said running nut (12, 112) being adapted to axially travel along the threaded portion (34, 134) in order to move a spring brake actuator piston against a force of an actuator power spring, - an indicator device (32, 132) comprising: an indicator pin (26, 126) having a longitudinal axis (28, 128) and being at least partially accommodated in a receiving space (40, 140) of the release bolt (30, 130), and a pin actuator (16, 116) for moving the indicator pin (26, 126) relative to the receiving space (40, 140) along its longitudinal axis (28, 128), and wherein the pin actuator (16, 116) comprises an indicator cap (36, 136) being configured to abut against the running nut (12, 112) for moving the pin actuator (16, 116) along its longitudinal axis (28, 128), characterized in that the indicator cap (36, 136) and the indicator pin (26, 126) are non-releasably connected to one another in their assembled state by a permanent bond and/or by a permanent deformation portion arranged at the indicator pin (26, 126), for providing a durable connection between the indicator cap (36, 136) and the indicator pin (26, 126). - a brake release bolt (30, 130) having a threaded portion (34, 134) and an operating section for operating the release bolt (30, 130) when inserted into a spring brake actuator, - a running nut (12, 112) engaging the threaded portion (34, 134), said running nut (12, 112) being adapted to axially travel along the threaded portion (34, 134) in order to move a spring brake actuator piston against a force of an actuator power spring, - an indicator device (32, 132) comprising: an indicator pin (26, 126) having a longitudinal axis (28, 128) and being at least partially accommodated in a receiving space (40, 140) of the release bolt (30, 130), and a pin actuator (16, 116) for moving the indicator pin (26, 126) relative to the receiving space (40, 140) along its longitudinal axis (28, 128), and wherein the pin actuator (16, 116) comprises an indicator cap (36, 136) being configured to abut against the running nut (12, 112) for moving the pin actuator (16, 116) along its longitudinal axis (28, 128), characterized in that the indicator cap (36, 136) and the indicator pin (26, 126) are non-releasably connected to one another in their assembled state by a permanent bond and/or by a permanent deformation portion arranged at the indicator pin (26, 126), for providing a durable connection between the indicator cap (36, 136) and the indicator pin (26, 126). an indicator pin (26, 126) having a longitudinal axis (28, 128) and being at least partially accommodated in a receiving space (40, 140) of the release bolt (30, 130), and a pin actuator (16, 116) for moving the indicator pin (26, 126) relative to the receiving space (40, 140) along its longitudinal axis (28, 128), and wherein the pin actuator (16, 116) comprises an indicator cap (36, 136) being configured to abut against the running nut (12, 112) for moving the pin actuator (16, 116) along its longitudinal axis (28, 128), characterized in that the indicator cap (36, 136) and the indicator pin (26, 126) are non-releasably connected to one another in their assembled state by a permanent bond and/or by a permanent deformation portion arranged at the indicator pin (26, 126), for providing a durable connection between the indicator cap (36, 136) and the indicator pin (26, 126).