Grade 8.8 hexagon socket set screw, China Grade 8.8 hexagon socket set screw Manufacturers, Suppliers, Factory

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Product Name	Galvanized Class 8.8 Hexagon socket recessed end set screw with knurled DIN914
Standard	DIN,ASTM/ANSI JIS EN ISO,AS,GB
Material	Galvanized
Material	Carbon steel:1010,1022,
Finishing	Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG) phosphorization,Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated

Material and chemical composition:
GRADE	CHEMICAL COMPOSITION1(%MAXIMA UNLESS STATED)
	C	Si	Mn	P	S	Cr	Mo	Cu
A1	0.12	1	6.5	0.2	0.15/0.35	16-19	0.7	1.75-2.25
A2	0.1	1	2	0.05	0.03	15-20	5	4
A3	0.08	1	2	0.045	0.03	17-19	5	1
A4	0.08	1	2	0.045	0.03	16-18.5	2.3	4
A5	0.08	1	2	0.045	0.03	16-18.5	2.7	1
C1	0.09-0.15	1	1	0.05	0.03	11.5-14	-	-
C3	0.17-0.25	1	1	0.04	0.03	16-18	-	-
C4	0.08-0.15	1	1.5	0.06	0.15-0.35	12-14	0.8
F1	0.12	1	1	0.04	0.03	15-18	10