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JB/T 7428-2006 English PDF

JB/T 7428: Evolution and historical versions

Standard ID	JB/T 7428-2006 (JB/T7428-2006)
Description (Translated English)	Thread forming tap
Sector / Industry	Mechanical & Machinery Industry Standard (Recommended)
Classification of Chinese Standard	J41
Classification of International Standard	25.100.50
Word Count Estimation	17,198
Date of Issue	2006-10-14
Date of Implementation	2007-04-01
Older Standard (superseded by this standard)	JB/T 7428-1994
Quoted Standard	GB/T 192; GB/T 193; GB/T 196; GB/T 197; GB/T 968
Regulation (derived from)	NDRC Notice No. 71 of 2006
Issuing agency(ies)	Ministry of Industry and Information Technology
Summary	This standard specifies the type common thread forming taps and basic dimensions, technical requirements, performance testing and marking, packing the basic requirements. This standard applies to the non-ferrous metal and low intensity black metal parts by GB/T 192 ~ 193, GB/T 196 ~ 197 processing nominal diameter 2mm ~ 27mm common thread tap. This standard tap thread tolerance zone is divided into H1, H2, H3, H4 four kinds, H1, H2, H3 usually molars Taps, H4 usually non- molar tap.