3.1.2 金属材料与五金（Metals and Hardware） (1) 高强度（强力）螺栓及垫圈应符合[ASTM A325][ ]之要求。所 有种类螺栓帽应配合高强度螺栓之强度。
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Applications: Can mark on metals and a variety of non-metals. Widely used in electronic components, hardware, glasses, clocks, jewelry, auto parts, plastic buttons, ect.
应用：可标记金属及多种非金属。广泛应用于电子元器件、五金制品、眼镜钟表、首饰饰品、汽车配件、塑胶按键等。
Applications: Can mark on metals and a variety of non-metals. Widely used in electronic components, hardware, glasses, clocks, jewelry, auto parts, plastic buttons and other industries.
应用：可标记金属及多种非金属。广泛应用于电子元器件、五金制品、眼镜钟表、首饰饰品、汽车配件、塑胶按键等行业。
B. base Metals: Produce door hardware units of base metal indicated, fabricated by forming method indicated, using manufacturer's standard metal alloy, composition, temper, and hardness.
基本金属材料：按照要求生产门用五金，按照要求的组件方法加工，使用制造商的标准金属合金，成分，韧度和硬度。
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