螺栓: ASTM A325/A325M, ASTM A490/A490M, DIN 6914 螺母: ASTM A563/A563M, DIN 6915 垫圈: ASTM F436/F436M, DIN 6916, DIN 6917, DIN 6918
1/2'' ~1 1/2'', M12~M36, M12~M36
普通,黑色,镀锌,热浸镀锌...
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