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13.1 螺距<br />

Q=11 Whitworth 管螺紋<br />

螺紋指定<br />

直徑<br />

( 單位 mm)<br />

螺距 螺紋指定<br />

直徑<br />

( 單位 mm)<br />

螺距<br />

1/8 “ 9.728 0.907 2 “ 59.614 2.309<br />

1/4 “ 13.157 1.337 2 1/4 “ 65.71 2.309<br />

3/8 “ 16.662 1.337 2 1/2 “ 75.184 2.309<br />

1/2 “ 20.995 1.814 2 3/4 “ 81.534 2.309<br />

5/8 “ 22.911 1.814 3 “ 87.884 2.309<br />

3/4 “ 26.441 1.814 3 1/4 “ 93.98 2.309<br />

7/8 “ 30.201 1.814 3 1/2 “ 100.33 2.309<br />

1 “ 33.249 2.309 3 3/4 “ 106.68 2.309<br />

1 1/8 “ 37.897 2.309 4 “ 113.03 2.309<br />

1 1/4 “ 41.91 2.309 4 1/2 “ 125.73 2.309<br />

1 3/8 “ 44.323 2.309 5 “ 138.43 2.309<br />

1 1/2 “ 47.803 2.309 5 1/2 “ 151.13 2.309<br />

1 3/4 “ 53.746 1.814 6 “ 163.83 2.309<br />

Q=13 UNC US 粗螺紋<br />

螺紋指定<br />

直徑<br />

( 單位 mm)<br />

螺距 螺紋指定<br />

直徑<br />

( 單位 mm)<br />

螺距<br />

0.073 “ 1.8542 0.396875 7/8 “ 22.225 2.822222222<br />

0.086 “ 2.1844 0.453571428 1 “ 25.4 3.175<br />

0.099 “ 2.5146 0.529166666 1 1/8 “ 28.575 3.628571429<br />

0.112 “ 2.8448 0.635 1 1/4 “ 31.75 3.628571429<br />

0.125 “ 3.175 0.635 1 3/8 “ 34.925 4.233333333<br />

0.138 “ 3.5052 0.79375 1 1/2 “ 38.1 4.233333333<br />

0.164 “ 4.1656 0.79375 1 3/4 “ 4<strong>4.4</strong>5 5.08<br />

0.19 “ 4.826 1.058333333 2 “ 50.8 5.644444444<br />

0.216 “ 5.4864 1.058333333 2 1/4 “ 57.15 5.644444444<br />

1/4 “ 6.35 1.27 2 1/2 “ 63.5 6.35<br />

5/16 “ 7.9375 1.411111111 2 3/4 “ 69.85 6.35<br />

3/8 “ 9.525 1.5875 3 “ 76.2 6.35<br />

7/16 “ 11.1125 1.814285714 3 1/4 “ 82.55 6.35<br />

1/2 “ 12.7 1.953846154 3 1/2 “ 88.9 6.35<br />

9/16 “ 14.2875 2.116666667 3 3/4 “ 95.25 6.35<br />

5/8 “ 15.875 2.309090909 4 “ 101.6 6.35<br />

3/4 “ 19.05 2.54<br />

746 13 表格與概述

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