Ningbo Lesheng Hardware Technology Co. LTD
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Contact:Mr Zhou
Telephone: +86-574-87311242
Mobile Phone: +86-13732173555
Fax: +86-574-87291838
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Cross Recessed Pan Head Screws,Single Coil Spring Lock Washer And Plain Washers Assemblies

GB 9074.4-1988
material    Carbon steel
Coating    zinc plated color

This product corresponds to the standard

GB 9074.4-1988