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Double End Screw
OA009-150919-1
Process: Threading after screw cutting, and acid washing being the last step All the items are inspected during the process and before shipping, complying with ISO Working Instruction Inspection Tools: Calipers, Ring gage, Micrometer, 2.5D and 2D projector Measurement Points: Machine thread diameter, Machine thread length, Wood thread diameter, Wood thread length, Total length, Length of the unrolled middle part, Pitch, Angle of the pointed tail, Thread angle, Ring gage