GB/T 972-2008 Active National standards

GB/T 972-2008 Thread rolling flat dies

Publish Date: 2008-06-03 Implement Date: 2009-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 972-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Knives

ICS Name: Taps and punch dowels

Publish Date: 2008-06-03

Implement Date: 2009-01-01

Pages: 9 pages

Scope

This standard specifies the basic requirements for the type and size of thread rolling dies used for ordinary threads, the tooth profile dimensions and tolerances, technical requirements, marking, and packaging. This standard applies to thread rolling dies used for processing ordinary threads (GB/T 192–193, GB/T 196–197). The thread rolling dies are divided into three accuracy grades: 1st, 2nd, and 3rd. The 1st grade is suitable for processing external threads with tolerance grades of 4 and 5; the 2nd grade is suitable for processing external threads with tolerance grades of 5 and 6; and the 3rd grade is suitable for processing external threads with tolerance grades of 6 and 7.