| 選擇規(guī)格尺寸 點(diǎn)擊↓ 10# 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 | 尺寸單位:
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| ①,最小螺紋長度: 螺紋的最小長度應(yīng)等于螺栓基本直徑的兩倍加上0.25英寸(對于6英寸或更短的螺栓標(biāo)稱長度),以及兩倍基本螺栓直徑加上0.50英寸(對于較長的標(biāo)稱長度)。 標(biāo)稱長度太短而無法容納最小螺紋長度的螺栓應(yīng)為全螺紋螺栓。從頭部或頸部到第一個(gè)完整(完整)螺紋的長度不得超過2-1/2螺紋(尺寸小于等于1英寸)和3-1/2螺紋(尺寸大于1英寸)。 | 
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