Patent ID: 6874986
Filing Date: 2005-04-05
Classification: F16B,Y10S

Abstract:
1. A self-tapping fastener made of stainless steel having a shaft with a tool access at a first end and with a boring part at a second end, characterized in that the shaft is formed of two sections ( 7 , 8 ) of stainless material, which are connected to each other by at least one of positive, material and frictional engagement, wherein the first section ( 7 ) of shaft ( 2 ) which has the tool access ( 4 ) and a threaded region, is made of stainless, purely ferritic or austenitic steel or stainless compound steel and a second section ( 8 ) of shaft ( 2 ) which is configured as the boring part ( 5 ) or includes the boring part ( 5 ) is made of a martensitic stainless steel with a carbon content of 0.04% to 0.3%.