... , #4-#12, 1/4"-5/8(M4-M24) all is ok for us.3. MaterialsAISI C1010, 10B21, SCM435, 45# steel, S25C, S20C ... . FOB Shenzhen price 8-55usd/1000pcs PS: THE TECHNICAL DRAWINGS FOR WING SCREWS: -----------B:Business terms 1)Incoterms: EXWDongguan(FCA), FOBShenzhen ... sale service: Our company are with the a corresponding procedures for dealing with customers’ complaint. We have the responsible QC, Engineers ...