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ShangHai ZhiYou Hardware Co.,Ltd
上海志宥五金有限公司
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5 Years
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Hex flange bolts
Inner hex flange screws
Lock nuts
Lock washers
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(UNI 5721 - 1969)
material
Carbon steel
材料：碳钢、不锈钢、铜；表面处理：发黑、镀锌、洗光；公称直径：M4-M24
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GB /T 802.3 - 2009
GB /T 923 - 2009
GB /T 923 - 1988
DIN 1587 - 2021
DIN 917 - 2021
DIN 917 - 2015
DIN 1587 - 2014
DIN 917 - 2000
DIN 1587 - 1987
DIN 917 - 1987
Q 39A
