Material:Stainless steel or Carbon steel
Standard:DIN,GB
Certificate:CE, ISO9001
Surface treatment:PLAIN, BLASTING, ZINC PLATED, HOT DIP GALVANISED, etc.
C1022 flat head phillips type 17 Self drilling screw
Grade：4.8/8.8/10.9/12.9 and etc
Specification：M4-M12
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