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- ASTM A307 Grade A Hex Bolts
- ASTM A307 specification covers the chemical and mechanical requirements for three grades (Grades A, B, and C) of carbon steel bolts, studs, threaded rods with minimum tensile requirement of 60 ksi. However Grade C has been replaced by ASTM F1554 Grade 36
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Ningbo Steel Bolt Co., Ltd
[Verified]
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Negotiable
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