China National Standards

China thumb GB Standards List

  •  China "thumb" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 839-1988 Knurled thumb screws with waisted shank
    滚花头不脱出螺钉    		 China National Standards
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    English PDF
    GB/T 834-1988 Knurled thumb screws
    滚花高头螺钉    		 China National Standards
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    English PDF

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