Equivalent to 4140, SK4
36HRC-44HRC (4140), 56 HRC-60 HRC (SK4)
Black oxide (Fe3O4)
Our metal punch retainer has anti-loosening hexagon socket head cap screw and is suitable for punching mold, automobile die and different plastic bag making machines. If you are interested in our superior punch holder, please feel free to contact us!
|Digital height gauge, caliper, coordinate measuring machine, projection machine, roughness tester, hardness tester, etc.|
|QC||1) Technicians do self-check in the production
2) Engineers do spot check in the production
3) QC personnel do inspection after the mass production finished
4) International salesmen with technical know-how do spot check before shipping
|Main markets||North America, South America, Eastern Europe , West Europe , North Europe, South Europe, South Asia, etc.|
Packing and Delivery
|Package||Coated with anticorrosive oil, packed in carton box;
in bubble wrap, together with QA report.
|Delivery||By Sea or By Air|
|Express||DHL, FedEx, UPS, TNT, EMS, etc.|
Guide pillars, Guide bushings, Guide post set, Ball cages
Mold ejector pins, Ejector sleeves
Oiless bush, Bronze wear plate
Punch Pin, Die Button, Ball-lock Punch, Punch Retainer.