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GB/T 25667.1-2010Solid carbide twist drills with parallel shank Part1: The types and dimensions for parallel shank twist drills (English PDF)

整体硬质合金直柄麻花钻第1部分：直柄麻花钻型式与尺寸

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 23, 2010

Implementation date

July 1, 2011

Scope

GB/T 25667.1-2010 is the English-translated version of 整体硬质合金直柄麻花钻第1部分：直柄麻花钻型式与尺寸.

GB/T 25667.1-2010 is the first part of the Chinese series on solid carbide twist drills with a parallel shank, and it fixes the types and the dimensions. It lists the drill types covered and tabulates their dimensions and tolerances - diameter, overall length, flute length and shank - so that a drill can be ordered and replaced by its designation.

It applies to solid carbide twist drills from 1.9 mm to 20 mm in diameter. Tool makers, distributors and machine shops use it. Issued on 23 December 2010, it has applied since 1 July 2011.

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Document preview — GB/T 25667.1-2010

National Standard of the People's Republic of China

ICS: 25.100.30
Classification: J 41

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Type and size

Foreword

GB/T 25667 "Solid carbide straight shank twist" is divided into three parts.

--- Part 1. Straight shank twist type and size;

Part --- Article 2. 2 ° beveled straight shank twist type and size;

--- Part 3. Technical requirements.

This section GB/T 25667 Part 1.

1 Scope

This section GB/T 25667 specifies the solid carbide straight shank twist (hereinafter referred to as "twist") of the type and size.

This section applies to a diameter of 1.9mm ~ 20mm twist drill.

2 Type and size

2.1 Twist the sub-type

A and type B type two, see Figure 1 and Figure 2.

2.2 Twist drill size

According to Table 1 and Table 2 regulations.

Figure 1 A shank twist type FIG. 2 B-type straight shank twist type

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 18 pages — is available in the English PDF.

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GB/T 25672-2021|GB/T 14895-2010|GB/T 25667.2-2010|GB/T 25667.3-2010|GB/T 25673-2010|GB/T 6335.2-2010

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