GB/T 6138.2-2007 Replaced National standards

GB/T 6138.2-2007 Subland twist drills for holes prior to tapping screw threads—Part 2:The types and dimensions of subland twist drills with Morse typer shanks

GB/T 6138.2-2007 Subland twist drills for holes prior to tapping screw threads—Part 2:The types and dimensions of subland twist drills with Morse typer shanks

Publish Date: 2007-06-25 Implement Date: 2007-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 6138.2-2007

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Knives

ICS Name: Drill, reamer, and hobbing cutter

Publish Date: 2007-06-25

Implement Date: 2007-11-01

Pages: 4 pages

Scope

This section specifies the types and dimensions of Morse taper-shanked stepped twist drills (ordinary and precision grades) used for drilling before tapping. This section applies to Morse taper-shanked stepped twist drills used for drilling before tapping M8 to M30 ordinary threads.

Development Information

Word Count: 6 Thousand words Pages: 4 pages

Same series standard

GB/T 6138.1-2007 Subland twist drills for holes prior to tapping screw threads—Part 1:The types and dimensions of subland twist drills with cylindrical shanks

Replace the following standards

GB/T 6138.2-1997 Subland twist drills for holes prior to tapping screw threads—Part 2:The types and dimensions for subland twist drills with Morse shanks

Superseded by the following standards

GB/T 6138-2023 Subland twist drills for holes prior to tapping screw threads

Referenced Standards

GB/T 1443-1996 Machine tools—Self-holding tapers for tool shanks GB/T 1443-2016 Self-holding tapers for machine tools and tool shanks

Adopt standards

ISO 3438:2003

Related Standards

GB/T 4267-1984 Replaced

GB/T 4267-1984 Rotating tools with parallel shanks—Diameters of shanks and sizes of driving squares

Publish Date: 1984-03-28

GB/T 14299-1993 Replaced

GB/T 14299-1993 Spiral flute drill with indexable inserts

Publish Date: 1993-04-17

GB/T 14332-1993 abolished_transferred

GB/T 14332-1993 Ejector drills with carbide tips

Publish Date: 1993-04-17

GB/T 1438.1-1996 Replaced

GB/T 1438.1-1996 Taper shank twist drills—Part 1:The types and dimensions for Morse taper shank twist drills

Publish Date: 1996-07-05

GB/T 1438.2-1996 Replaced

GB/T 1438.2-1996 Taper shank twist drills—Part 2:The types and dimensions for long Morse taper shank twist drills

Publish Date: 1996-07-05

GB/T 1438.3-1996 Replaced

GB/T 1438.3-1996 Taper shank twist drills—Part 3:The types and dimensions for lengthened Morse taper shank twist drills

Publish Date: 1996-07-05