Standard No.:	GB/T 28691-2012
English Name:	High precision trapezoidal thread broaching tap
Chinese Name:	高精度梯形螺纹拉削丝锥
Chinese Classification:	J41    Cutting tools
Professional Classification:	GB    National Standard
ICS Classification:	25.100.50 25.100.50    Taps and threading dies 25.100.50
Source Content Issued by:	AQSIQ;SAC
Issued on:	2012-9-3
Implemented on:	2013-1-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1~3 business day

本标准规定了高精度梯形螺纹拉削丝锥的型式和尺寸、螺纹公差、技术要求、标志和包装的基本要求。
本 标准适用于加工梯形螺纹(JB/T2886—2008中7、8、9级非配作螺母)用的高精度梯形螺纹拉削丝锥(以下简称丝锥)。