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板牙系列机用丝锥手用丝锥中心钻
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| ◆ 英制螺纹圆板牙
DIES FOR BRITISH STANDARD THREAD |
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英制螺纹圆板用合金工具钢制造，牙形角为55°。
The dies for
British Standard Thread are made of alloy tool
steel and the thread angle is 55°. |
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螺纹代号
Thread code |
每英寸牙数
Teeth Per inch |
外径
Outsize Diameter
mm |
厚度
Thickness
mm |
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1/8＂ |
40 |
20 |
5 |
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3/16＂ |
24 |
20 |
7 |
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1/4＂ |
20 |
20 |
7 |
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5/16＂ |
18 |
25 |
9 |
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3/8＂ |
16 |
30 |
11 |
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7/16＂ |
14 |
30 |
11 |
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1/2＂ |
12 |
38 |
14 |
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9/16＂ |
12 |
38 |
14 |
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5/8＂ |
11 |
45 |
14 |
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3/4＂ |
10 |
45 |
18 |
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7/8＂ |
9 |
55 |
18 |
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1＂ |
8 |
55 |
22 |
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Email address here please |
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机用丝锥用于在机床上加工通孔的内螺纹，刃部由高速钢制成，螺纹经过磨制。 |
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板牙适用于外螺纹加工，采用合金工具钢，几何精度高，切削性能好。 |
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复合中心钻适用于一次钻成带护锥60°的中心孔，材料为高速钢。 |
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