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excavator track shoe bolts & nuts , 40cr material 10.9 12.9 high hardness track bolt and nut, us $ 0.2 10 / piece, fujian, china, gt track shoe bolts & nuts, 10.9 12.9 track bolt and nuts.source from xiamen globe truth (gt) industries co., ltd. on alibaba .
machinery hexagon heavy hex bolts material carbon steel, stainless steel and others finish zinc, plain standard din, ansi, bsw, jis grade 4.8/ 8.8/ 10.9/ 12.9 etc. color customized colors machinery hexagon heavy hex bolts size m2 m100 advantage customized service provided oem acceptable quality control 100 inspection usage engineering machinery surface hdg, plain,
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12.9 class 12.9 alloy steel, quenched and tempered 1.6mm 100mm 141,000 / 970 160,000 / 1100 177,000 / 1220 tensile strength the maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing.
may 26, 2016 in the metric world (a.k.a. iso) the most common bolts are marked with an 8.8, 10.9, or 12.9. if there are no head markings at all, they are most likely comparable to the sae grade 2. the 8.8 is comparable to the sae grade 5. the 10.9 is comparable to the sae grade 8. the 12.9 is comparable to the sae allen head.
