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We made four kinds of customized screws and export to Iran for over 15 years. Please advise your screw inquiry with the following info : 1) The picture or drawing with full specifications. 2) The material:1. is stainless steel (SS304 series? or SS430 series) or carbon steel in low, middle or high?2.The finish (Zinc plated, yellow plated or others...) and the Chromated is Cr6 or Cr3 if material is carbon steel.3.The screws have the "Heat treat" or not. If yes, please advise how hard of degree for HRC (Rockwell). 3) Thread size x pitch: Metric (ex: M2x8, M4x10…etc.) or inch (#8-32, #6-32…etc.) 4) Ordering q'ty .

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