Standard No.:	JB/T 7428-2006
English Name:	Thread forming tap
Chinese Name:	挤压丝锥
Chinese Classification:	J41    Cutting tools
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	25.100.50 25.100.50    Taps and threading dies 25.100.50
Source Content Issued by:	NDRC
Issued on:	2006-10-14
Implemented on:	2007-4-1
Status:	abolished
Abolished on:	2017-05-12
Superseding:	JB/T 7428-1994
Target Language:	English
File Format:	PDF
Word Count:	6500 words
Translation Price(USD):	190.0
Delivery:	via email in 1~3 business day

本标准规定了普通螺纹挤压丝锥的型式和基本尺寸、技术要求、性能试验和标志、包装的基本要求。本标准适用于在有色金属及低强度黑色金属零件上按GB/T192～193、GB/T196～197加工公称直径2mm～27mm的普通螺纹的丝锥。本标准的丝锥螺纹公差带分为H1、H2、H3、H4四种。H1、H2、H3通常是磨牙丝锥，H4通常是非磨牙丝锥。