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组合螺钉

标准:DIN 6900 / ISO 10644
规格:M2.5 - M12
材质:Carbon Steel (1022A, 10B21), Stainless Steel (SS304/316)
强度等级:4.8, 8.8, 10.9
表面处理:Zinc Plated (Clear/Blue/Yellow), Black Oxide, Geomet, Dacromet, Nickel Plated.
预装配:垫圈通过搓牙工艺锁定,永不脱落