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No. 8 Gaozhuang West Road, Modern Industrial Park, Tianzihu Town, Anji County, Huzhou City, Zhejiang Province
Hexagon Head Bolt/Nut/Flat Pad
| Standard | Size | Grade | Surface Treatment |
| GB/T5782 | M16-M30 | 5.6/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| ISO 4014 | M12-M64 | 5.6/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| DIN 931 | M12-M39 | 5.6/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| AS1110.1 | M12-M64 | 5.6/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| GOST 7798 | M12-M64 | 5.6/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| BS3692 | M12-M68 | 4.6/4.8/6.8/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| BS4190 | M12-M68 | 4.6/4.8/6.8/8.8/10.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
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