BEARING MODIFIER NAME AS PER DRAWING DRAWING NUMTEC INTERSTAHL DRAWING NUMBER 61391 CONTRACT AI3-112/26683 SPECIFICATION NOTE: THE SUPPLYING COMPANY MUST SEND THE FOLLOWING CERTIFICATES ALONG WITH THE INVOICE, INDICATING THE ORDER NUMBER AND THE INVOICE NUMBER: – OF THE SPECIFIED HEAT TREATMENT; – OF THE CHEMICAL COMPOSITION OF THE MATERIAL, AS SPECIFIED; – OF THE DIMENSIONAL; – OF ULTRASOUND; – OF PENETRATING LIQUID; – OF HARDNESS.