DIN 277-3(1)
高层建筑建筑的基底面积和体积 第3部分:数量和参考单位
Plan areas and volumes in building — Part 3: Quantities and reference units
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Plan areas and volumes in building — Part 3: Quantities and reference units
Round thread with clearance and flat flank with pitch 7 mm; limits of sizes and deviation - tolerances and permissible wear of thread gauges