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CNS CNS 4557 Standard english version introduction

CNS General No. CNS 4557
Classified No. B2291
Hexagon socket head cap screws; shallow head with pilot recess for wrench key
六角承窩短頭螺釘(具六角杆扳手導孔者)
Date of Approval
Bureau of Standards, Metrology and Inspection Date of Revision
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CNS Standard Code CNS 4557
CNS Standard Classified No. B2291
CNS Standard English Title Hexagon socket head cap screws; shallow head with pilot recess for wrench key
CNS Standard Chinese Title 六角承窩短頭螺釘(具六角杆扳手導孔者)
CNS Standard Edition 1981-04
CNS Standard Pages 3
English Translation Price $75.00 USD -About $25  per 1 page
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