13C140

13C140 — is a specific DTFR tolerance code that defines the maximum allowable deviation of dimensional parameters and material strength for this type of parts. In this designation, the number 13 indicates the accuracy class (±0.13 mm), the letter C denotes the type of surface treatment, and the number 140 is the nominal strength in MPa. When selecting components, you should ensure that they correspond to this exact code, otherwise the compatibility and reliability of the assembly may be compromised. This tolerance is suitable for applications where high mechanical loads and strict geometric requirements are important, such as in heavy automotive transport or industrial units.