Cross Recessed Countersunk Head Self-Drilling Screws
Product introduction
Self-Drilling Screws also called dovetail screws , is a self-tapping screw with a drilling tail , which can be drilled by itself when in use , without the need for pre-drilling . Widely used in steel structure color steel tile fixing, building sheet fixing and other fields . The self-Drilling screws has higher surface hardness and core hardness than the self-tapping screws , and can be used for multiple drilling.
Product information
Productname: Cross Recessed Pan Head Self-Drilling Screws
surface hardness: min HV450
core hardness: HRC28-38
Surface treatment：Color-Plated zinc
Material: Carbon Steel
Specification: ST3.5 – ST6.3
Standard: GB/T 15856.2 DIN EN ISO 15482
DIN
