GB/T 6138.2-1997 in English
SUPERSEDEDSubland twist drills for holes prior to tapping screw threads. Part 1: The types and dimensions for subland twist drills with Morse shanks
- Issued on:1997-08-28
- Implemented on:1998-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
| Standard No: | GB/T 6138.2-1997 |
| Document status: | SUPERSEDED |
| Superseded by: |
GB/T 6138.2-2007 Subland twist drills for holes prior to tapping screw threads -Part2:The types and dimensions of Subland twist drills with Morse typer shanks
|
| Superseded on: | 2007-11-01 |
| Title in English: | Subland twist drills for holes prior to tapping screw threads. Part 1: The types and dimensions for subland twist drills with Morse shanks |
| Title in Chinese: | 攻丝前钻孔用阶梯麻花钻 第2部分:莫氏锥柄阶梯麻花钻的型式和尺寸 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 1997-08-28 |
| Implemented on: | 1998-06-01 |
| ICS Classification: | 25.100.30-Drills, countersinks, reamers |
| Chinese Classification: | J41-Cutting tools |
| Professional Classification: | GB-National Standard |
| Related Keywords: | subland twist drills
twist drills morse shanks scopethis standard morse taper shank screw threads |
| Related Topics: | twist drill
ladder drilling order stepped probe GB/T 6138.2 GB/T 6138.2-1997 GB/T 6138.2-2007 Taps and Drills |
《GB/T 6138.2-1997攻丝前钻孔用阶梯麻花钻 第2部分:莫氏锥柄阶梯麻花钻的型式和尺寸》由TC91（全国刀具标准化技术委员会）归口，主管部门为中国机械工业联合会。
Scope
This standard specifies the types and dimensions of Morse taper shank stepped twist drills for drilling holes before tapping. This standard is applicable to stepped twist drills with Morse taper shank for drilling M8~M30 common thread before tapping.
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