Item:	STAINLESS STEEL SELF TAPPING SCREW
Material:	SS316, SS304, SS410
Type	Pan "+" head, Hex.head
Dia.	3mm-9mm
Length	9mm-36mm
Hardness surface	≥450HV0.3
Hardness inside	270～390HV5(thread≤ST3.9) or 270～390HV10(thread≥ST4.2)
Technical parameters	Proof Strength N/mm2	Tensile Strength N/mm2	Elongation min. %
	≥235	>450	≥25
	SS316			SS304
Chemical composition %:	C	≤0.08%		C	≤0.08
	Mn	≤0.2%		Mn	≤2
	Si	≤1%		Si	≤1
	S	≤0.03%		P	≤0.045
	P	≤0.045%		S	≤0.03
	Cr	16-18%		Cr	18-20
	Ni	10-14%		Ni	8-10
	Mo	2-3%