... 2.wire dia.:0.01-10mm 3.ISO9001 certificate. spring lock pin1.material:SS301,SS302,SS304,SS316,SS17-7,etc2.wire ... treatment:Zinc,Nickel,silver,golden,tin,powder coating.6.Applications: Automotive, medical device, electronics, toy,etc Stainless Steel spring lock pin Verified ... Acceptable Production Flow: 1.Raw material 2.Pressure spring 3.Torsion spring 4.Tempering 5.End grinding 6.Shot blasting 7 ...