The precision steel machining parts are lathe accessories, which were made by machining center. The material is C45 steel, the finish is carburizing and black oxiding. For the custom steel machining parts, MOQ is 1000 PCS and the lead time is 30 days. JST has made many steel machining lathe parts for our US customers, the accuracy is +/-0.01MM for the critical dimensions. If you have any inquiries for precision custom steel machining parts or precision steel machining lathe parts, please do feel free to send us drawings for quotation and we could accept the files of PDF/DWG/STP/IGS.