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hexagon bolts
standard: DIN931, DIN933, DIN558, DIN601, DIN6914, DIN961, DIN7990, ISD960
material:carbon steel, stainless steel, brass
grade:4.8, 5.6, 5.8, 6.8, 8.8, 10.9, 12.9
size: M3~ M56
finishing: plain, zinc plated cr3, zinc plated cr6, H.D.G., dacromet, geomet, black phosphated
hexagon bolts
