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The production of steel wire thread insert is strictly in accordance with the standard. The standard ISO unified thread "UN" series steel wire thread insert, the tapping accuracy of the installation hole of the insert, usually forming 6h level, can reach 5h tolerance when the accuracy is high. The corresponding level plug gauge can be used to detect the bottom hole thread.

  • Xinxiang Xiyangyang Screening Machinery Manufacturing Co., Ltd.
    Standard: Quality management certification
    Number: 02619Q31196R0S
    Issue Date: 2019-12-26
    Expiry Date: 2022-12-25
    Scope/Range: Production of steel wire test screen
    Issued By: Beijing tianyizheng Certification Center Co., Ltd