GB/T 25667.2-2010Solid carbide twist drills with parallel shank Part2: The types and dimensions for parallel shank twist drills with 2°anguar fiants (English PDF)
整体硬质合金直柄麻花钻 第2部分：2°斜削平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 25667.2-2010 is the English-translated version of 整体硬质合金直柄麻花钻 第2部分：2°斜削平直柄麻花钻型式与尺寸.
GB/T 25667.2-2010 is the Chinese standard "Solid carbide twist drills with parallel shank Part2: The types and dimensions for parallel shank twist drills with 2°anguar fiants".
Its scope clause reads: This section GB/T 25667 specifies the solid carbide straight shank twist 2 ° bevel (hereinafter referred to as "twist") and the type size.
This section applies to a diameter of 2.9mm ~ 20mm twist drill. Its clauses include type and size.
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Document preview — GB/T 25667.2-2010
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
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
This section GB/T 25667 specifies the solid carbide straight shank twist 2 ° bevel (hereinafter referred to as "twist") and the type size.
This section applies to a diameter of 2.9mm ~ 20mm twist drill.
2 type and size
2.1
twist of the types and dimensions according to Figure 1 and Table 1, shank dimensions and deviations specified in Table 2.
Millimeters
1 twist drill pattern diagram
Table 1 twist drill size in millimeters
Diameter range d1 m7
> <=
Shank diameter d2 h6
Long, short series
Overall Length l1
Slot length l2 max
Blade length l3 min
Overall Length l1
Slot length l2 max
Blade length l3 min
Handle length l4 […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
GB/T 25667.1-2010 — Solid carbide twist drills with parallel shank Part1: The types and dimensions for parallel shank twist drills
GB/T 25667.3-2010 — Solid carbide twist drills with parallel shank Part3: Technical specifications
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