M1.6 M2 M2.5 Button Head Hex Socket Cap Screw Allen Key Bolts 10.9 High Tensile

M1.6 M2 M2.5 Button Head Hex Socket Cap Screw / Bolts Allen Key Black Grade 10.9. Pitch：0.35mm（M1.6）/ 0.4mm（M2）/0.45(M2.5). Material: High Tensile Grade 10.9 Steel. The product is made of 10.9 grade high strength carbon steel, which has the characteristics of high toughness, good cold and hot working performance and excellent machinability.

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