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- Grade 8.8 Hex Bolt
- There are different grade for hex bolts, such as 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the hexagonal bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. It reaches different grade after heat treatme
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Jiangsu Jinrui Metal Products Co., Ltd
[Verified]
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Negotiable
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