精度高
这款扳手适合关键紧固应用，包括塑料、复合材料和金属以及需要精确扭矩控制的其他工作。
耐用性好
采用精密自动断气离合器，经过一百万次循环测试，未出现任何故障，这款工具坚固耐用。
维护简便
所有 QA4 系列工具在设计时均以容易维护为本。
QA4 系列扳手 - 手持直式可调节自动断气
这款手持直式扳手经过专门设计，舒适性好、强度高。标准 4” 直式拧紧轴可提供 19 mm 浮动行程，能够适应更快的跳动，而可调节自动断气功能能够减少空气消耗并限制扭矩反作用力。具有多种安装法兰选项，这款工具适合多种应用。
<table>
<thead>
<tr>
<th>Model</th>
<th>Actuation</th>
<th>Torque Range (Nm)</th>
<th>Torque Range (ft-lb)</th>
<th>Torque Range (in-lb)</th>
<th>Free Speed (rpm)</th>
<th>Weight (kg)</th>
<th>Weight (lb)</th>
<th>Length (mm)</th>
<th>Length (in)</th>
<th>Head Side to Center (mm)</th>
<th>Head Side to Center (in)</th>
<th>Air Inlet</th>
<th>cfm</th>
<th>Spindle Type</th>
<th>Common Fastener Size</th>
</tr>
</thead>
<tbody>
<tr>
<td>QA4ASRS012NF41S06</td>
<td>Remote Start</td>
<td>6 - 12</td>
<td>4.4 - 8.8</td>
<td>n/a</td>
<td>1050</td>
<td>1.61</td>
<td>3.55</td>
<td>451</td>
<td>17.8</td>
<td>21</td>
<td>0.81</td>
<td></td>
<td>29</td>
<td>3/8 in. Square</td>
<td>M4 - M5</td>
</tr>
<tr>
<td>QA4ASRS015NF41S06</td>
<td>Remote Start</td>
<td>7 - 15</td>
<td>5.2 - 11.1</td>
<td>n/a</td>
<td>850</td>
<td>1.61</td>
<td>3.55</td>
<td>451</td>
<td>17.8</td>
<td>21</td>
<td>0.81</td>
<td></td>
<td>29</td>
<td>3/8 in. Square</td>
<td>M5 - M6</td>
</tr>
<tr>
<td>QA4ASRS020NF41S06</td>
<td>Remote Start</td>
<td>10 - 20</td>
<td>7.4 - 14.8</td>
<td>n/a</td>
<td>600</td>
<td>1.61</td>
<td>3.55</td>
<td>451</td>
<td>17.8</td>
<td>21</td>
<td>0.81</td>
<td></td>
<td>29</td>
<td>3/8 in. Square</td>
<td>M6 - M8</td>
</tr>
<tr>
<td>QA4ASRS027NF41S06</td>
<td>Remote Start</td>
<td>14 - 27</td>
<td>10.3 - 19.9</td>
<td>n/a</td>
<td>450</td>
<td>1.61</td>
<td>3.55</td>
<td>451</td>
<td>17.8</td>
<td>21</td>
<td>0.81</td>
<td></td>
<td>29</td>
<td>3/8 in. Square</td>
<td>M8 - M10</td>
</tr>
<tr>
<td>QA4ASRS046NF41S06</td>
<td>Remote Start</td>
<td>20 - 46</td>
<td>14.8 - 33.9</td>
<td>n/a</td>
<td>250</td>
<td>1.84</td>
<td>4.06</td>
<td>465</td>
<td>18.3</td>
<td>23</td>
<td>0.91</td>
<td></td>
<td>29</td>
<td>3/8 in. Square</td>
<td>M8 - M12</td>
</tr>
<tr>
<td>QA4ASRS046NF41S08</td>
<td>Remote Start</td>
<td>20 - 46</td>
<td>14.8 - 33.9</td>
<td>n/a</td>
<td>250</td>
<td>1.84</td>
<td>4.06</td>
<td>465</td>
<td>18.3</td>
<td>23</td>
<td>0.91</td>
<td></td>
<td>29</td>
<td>1/2 in. Square</td>
<td>M8 - M12</td>
</tr>
</tbody>
</table>
