hex screw nut
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Metric Hex Head Bolts
Product name: Hexagon Head Bolts With Hexagon Nut For Steel Structures 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, A449, A490，A354 Gr. BC 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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