... -M24) all is ok for us.3. MaterialsAISI C1010, 10B21, SCM435, 45# steel, S25C, S20C, SUS304, SUS316 or any other ... FOB Shenzhen price 8-55usd/1000pcs PS: THE TECHNICAL DRAWINGS FOR WING SCREWS: -----------B:Business terms 1)Incoterms: EXWDongguan(FCA), ... % Whole range inspection through the production. 3. Inspection equipment:Hardness test, torque test, salt spary endurance test, mechanical sizes test ...