螺纹刀具－英制圆板牙设计
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<TD class=blk12 align=middle colSpan=6><IMG height=183 alt="7-144.GIF (5645 字节)" src="http://www.chmcw.com/upload/news/RCL/13220_aw8xqr071230807495234.jpg" width=295></TD></TR>
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<TD class=blk12 vAlign=center align=middle width="15%" rowSpan=2>规格（in）</TD>
<TD class=blk12 style="WIDTH: 80%" vAlign=center align=middle width="85%" colSpan=5>基本尺寸</TD></TR>
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<TD class=blk12 vAlign=center align=middle width="15%">每英寸牙 数</TD>
<TD class=blk12 vAlign=center align=middle width="15%">D(mm)</TD>
<TD class=blk12 vAlign=center align=middle width="15%">H(mm)</TD>
<TD class=blk12 vAlign=center align=middle width="15%">d(mm)</TD>
<TD class=blk12 vAlign=center align=middle width="20%">牙型角</TD></TR>
<TR>
<TD>3/32</TD>
<TD>48</TD>
<TD>20</TD>
<TD>7</TD>
<TD>2.381</TD>
<TD>55°</TD></TR>
<TR>
<TD>1/8</TD>
<TD>40</TD>
<TD>20</TD>
<TD>7</TD>
<TD>3.175</TD>
<TD>55°</TD></TR>
<TR>
<TD>5/32</TD>
<TD>32</TD>
<TD>20</TD>
<TD>7</TD>
<TD>3.969</TD>
<TD>55°</TD></TR>
<TR>
<TD>3/16</TD>
<TD>24</TD>
<TD>20</TD>
<TD>7</TD>
<TD>4.763</TD>
<TD>55°</TD></TR>
<TR>
<TD>1/4</TD>
<TD>20</TD>
<TD>20</TD>
<TD>7</TD>
<TD>6.350</TD>
<TD>55°</TD></TR>
<TR>
<TD>5/16</TD>
<TD>18</TD>
<TD>25</TD>
<TD>9</TD>
<TD>7.938</TD>
<TD>55°</TD></TR>
<TR>
<TD>3/8</TD>
<TD>16</TD>
<TD>30</TD>
<TD>11</TD>
<TD>9.525</TD>
<TD>55°</TD></TR>
<TR>
<TD>7/16</TD>
<TD>14</TD>
<TD>30</TD>
<TD>11</TD>
<TD>11.113</TD>
<TD>55°</TD></TR>
<TR>
<TD>1/2</TD>
<TD>12</TD>
<TD>38</TD>
<TD>14</TD>
<TD>12.700</TD>
<TD>55°</TD></TR>
<TR>
<TD>9/16</TD>
<TD>12</TD>
<TD>38</TD>
<TD>14</TD>
<TD>14.288</TD>
<TD>55°</TD></TR></TBODY></TABLE>
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