A method for examining the process capability of a screwed connection, wherein said screwed connection has been tightened with a tightening angle (α A) under serial production conditions; characterized by the steps of: aaa) identifying, before executing step a), the screwed connection tightened under serial production conditions; and assigning, to the identified screwed connection, a known target tightening torque (M SOLL) and a known target tightening angle (α SOLL); aa) determining, before executing step a) and after executing step aaa), a predefined loosening angle difference (ω L) for the identified screwed connection, said loosening angle difference (ω L) being equal to the negative target tightening angle (α SOLL) value plus a predefined loosening angle allowance (α Z); a) loosening the screwed connection until the predefined loosening angle difference (ω L) is obtained; b) measuring the obtained loosening angle difference (ω L); measuring a loosening angle (α H) obtained in step a); c) tightening the screwed connection with a predefined threshold torque (M S); d) measuring a threshold angle (α S) corresponding to the threshold torque (M S) obtained; e) further tightening the screwed connection until the known target tightening angle (α SOLL) is obtained; and f) measuring the test angle difference (ω P) in the tightened state upon obtaining the target tightening angle (α SOLL), said test angle difference (ω P) being an angle difference between the holding angle (α H) and the target tightening angle (α SOLL). aaa) identifying, before executing step a), the screwed connection tightened under serial production conditions; and assigning, to the identified screwed connection, a known target tightening torque (M SOLL) and a known target tightening angle (α SOLL); aa) determining, before executing step a) and after executing step aaa), a predefined loosening angle difference (ω L) for the identified screwed connection, said loosening angle difference (ω L) being equal to the negative target tightening angle (α SOLL) value plus a predefined loosening angle allowance (α Z); a) loosening the screwed connection until the predefined loosening angle difference (ω L) is obtained; b) measuring the obtained loosening angle difference (ω L); measuring a loosening angle (α H) obtained in step a); c) tightening the screwed connection with a predefined threshold torque (M S); d) measuring a threshold angle (α S) corresponding to the threshold torque (M S) obtained; e) further tightening the screwed connection until the known target tightening angle (α SOLL) is obtained; and f) measuring the test angle difference (ω P) in the tightened state upon obtaining the target tightening angle (α SOLL), said test angle difference (ω P) being an angle difference between the holding angle (α H) and the target tightening angle (α SOLL). a) loosening the screwed connection until the predefined loosening angle difference (ω L) is obtained; b) measuring the obtained loosening angle difference (ω L); measuring a loosening angle (α H) obtained in step a); c) tightening the screwed connection with a predefined threshold torque (M S); d) measuring a threshold angle (α S) corresponding to the threshold torque (M S) obtained; e) further tightening the screwed connection until the known target tightening angle (α SOLL) is obtained; and f) measuring the test angle difference (ω P) in the tightened state upon obtaining the target tightening angle (α SOLL), said test angle difference (ω P) being an angle difference between the holding angle (α H) and the target tightening angle (α SOLL).