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CNS 4221 Standard english version introduction

CNS General No. CNS 4221
Classified No. B2157
Metric Trapezoidal Screw Thread (Limits for Internal Screw Threads From 8mm to 100mm)
梯形螺紋(標稱直徑8 mm至100 mm的內螺紋限界尺寸)
Date of Approval
Bureau of Standards, Metrology and Inspection Date of Revision
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CNS Standard Code CNS 4221
CNS Standard Classified No. B2157
CNS Standard English Title Metric Trapezoidal Screw Thread (Limits for Internal Screw Threads From 8mm to 100mm)
CNS Standard Chinese Title 梯形螺紋(標稱直徑8 mm至100 mm的內螺紋限界尺寸)
CNS Standard Edition 03/02/1978
CNS Standard Pages 5
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