b7 hex bolts
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Heavy Hex Bolt
Product name: Heavy Hex Bolts Head type: hex Material: Carbon Steel, Alloy Steel, Stainless Steel Standard: ASME/ANSI B 18.2.1, Measurement system: INCH, Metric Size: 1/4”-3” Grade / Class: ASTM A325, A490，A354 Gr. BC ; A307 Gr. B 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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