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部品等級 |
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A |
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材 料 |
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構造用合金鋼 |
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強度区分 |
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12.9(M1.6〜M20) |
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10.9(M1.6〜M30) |
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硬 さ |
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39〜44HRC(12.9) |
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32〜39HRC(10.9) |
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表面処理 |
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黒色酸化被膜 |
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ね じ |
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JIS B 0205(メートル並目、細目ねじ) |
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等 級 |
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JIS B 0209-3 5g6g (12.9) |
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JIS B 0209-2 6g (10.9) |
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Grade |
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A |
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Material |
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Special Alloy Steel |
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Strength Grade |
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12.9(M1.6〜M20) |
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10.9(M1.6〜M30) |
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Hardness |
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39〜44HRC(12.9) |
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32〜39HRC(10.9) |
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Surface Treatment |
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Black Oxide |
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Screw Threads |
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JIS B 0205(Coarse and Fine) |
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Class of Thread |
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JIS B 0209-3 5g6g (12.9) |
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JIS B 0209-2 6g (10.9) |
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