What should I do if the wedge anchor threaded portion easily strips during tightening?

The mechanical properties of the purchased auto parts do not meet the standards (strength, torque, toughness).

The anchor bolt’s tensile strength, yield strength, hardness, and other indicators fall below standard requirements (such as EN 14399 and ASTM A325). This means the bolt cannot achieve the predetermined preload during tensioning or may fracture brittlely. The threaded portion easily strips during tightening.

Desired Solution:

Specific performance grades (e.g., Grade 10.9, Grade 8.8) and implementation standards must be clearly specified in the purchase contract and technical agreement.

The supplier must provide batch-by-batch mechanical property test reports and accept random inspections of incoming products by us or a third party.

The supplier must have strict control over the heat treatment process and be able to provide process records.

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