| Large Square Head Bolt for Mine |
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| Basic Parameters |
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● Material:Carbon steel Alloy steel ● Specification:M10-M100 (/3/8″-4″) ● Length:20mm～1500mm ● Grade: Steel ISO898:8.8～12.9;J429 Gr.2-Gr.8 ● Surface: black, galvanized, hot-dip galvanized, Dacromet, Teflon, etc. |
