tapping screw thread

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1.	自攻螺钉螺纹德国螺钉标准... ... 内六角半沉头(椭圆形)自攻螺钉 Hexalobular socket raised countersunk 自攻螺钉螺纹 Tapping screw thread ... www.msckobe.com
2.	自攻螺纹机械方面专业词汇 - 豆丁网 ... 左旋螺纹 left-hand thread 自攻螺纹 tapping screw thread 基本牙型 basic profile ... www.docin.com
3.	木螺丝螺纹木螺丝螺纹（TAPPING SCREW THREAD） www.jgj1688.com

4.	自攻螺纹螺钉 ISO——国际标... ... 自攻螺纹螺钉( Tapping screw thread) 六角头自攻螺钉规范( Specification for hexagon-head tapping screws… www.mapeng.net
5.	自攻螺钉用螺纹北京电... ... 自攻螺钉用螺纹 Tapping screw thread 紧固件螺栓和螺钉用通孔 Fasteners;Clearance holes for bolts and screws ... www.kkxtest.com

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