Standard No.:	JB/T 8825.5-1998
English Name:	Circular screwing dies for whitworth threads
Chinese Name:	惠氏螺纹圆板牙
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:	National Technical Committee on Standardization of Cutters
Issued on:	1998-12-29
Implemented on:	1999-7-1
Status:	superseded
Superseded by:	JB/T 8825.5-2011 Tool for whinworth threads — Part 5：Circular screwing dies
Superseded on:	2012-4-1
Abolished on:	2012-04-01
Target Language:	English
File Format:	PDF
Word Count:	5000 words
Translation Price(USD):	304.0
Delivery:	via email in 1~3 business day

JB/T 8825.5-1998 本标准型式尺寸参照英国标准 BS 1127.1-1990《板牙（第一部分）手用和机用圆板牙和板牙架》的有关部分制订。其余部分参照我国国家标准 GB/T 970.2-1994《圆板牙 技术条件》制订。 本标准规定了惠氏螺纹圆板牙型和尺寸、技术要求、性能试验及标志和包装的基本要求。 本标准适用于加工螺纹代号为 1/8~2 3/4 惠氏螺纹的圆板牙。 本标准于 1998 年 12 月 29 日首次发布。