... years experience 4.MOQ:500 pcs Precision CNC machining stainless steel thread shaft Itemtopicdetails1materialstainless steel:303,304,316,420,630,3Cr13,4Cr13,420J2 ... Device , Height Gauge ,Projector, calliper ,micrometer,vernier caliper, thread gauges , plug gauges, pin gauges11quality systemISO 9001:2008QC control details: step 1IQCRaw ...