Modified truss head self drilling screw

Self drilling screw
1)DIN standard:

7504P: Countersunk head,self-drilling screw

7504N: Pan head self-drilling screw

7504K: Hex washer head self-drilling screw,Hex flange self-drilling screw



2)Material: carbon steel, stainless steel



3)Surface treatment: zinc plated,



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Modified truss head self drilling screw