square head machine bolts
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Square Head Bolts
Material: Carbon Steel, Alloy Steel, Stainless Steel Standard: ASME/ANSI B 18.2.1 JIS B 1182 Measurement system: INCH, Metric Size: 1/4”-1”, Grade / Class: Gr.2, 5,8; ASTM A307Gr.A, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 Thread: M, UNC, UNF Finish: Black Oxide, Zinc Plated(Clear/Blue/Yellow/Black),H.D.G , Y.Z.P ,Plain, Nickel, Chrome.
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