TUV Test Report for BONOSS Extended Wheel Bolts M14x1.25

Decarburization Test-hardness method: (Test Method: ISO 898-1:2013+Cor-1:2013)

Retempering Test: (Test Method: ISO 898-1:2013+Cor-1:2013)

Hardness Test: (Test Method: ISO 6507-1:2018)

No: 01 220 CHN/T-1904976

Grade:12.9

Material:SCM440