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GB/T 25667.2-2010: Solid carbide twist drills with parallel shank -- Part 2: The types and dimensions for parallel shank twist drills with 2-degree angular flats
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 25667.2-2010 | English | 149 |
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Solid carbide twist drills with parallel shank -- Part 2: The types and dimensions for parallel shank twist drills with 2-degree angular flats
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GB/T 25667.2-2010
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Basic data | Standard ID | GB/T 25667.2-2010 (GB/T25667.2-2010) | | Description (Translated English) | Solid carbide twist drills with parallel shank -- Part 2: The types and dimensions for parallel shank twist drills with 2-degree angular flats | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J41 | | Classification of International Standard | 25.100.30 | | Word Count Estimation | 5,594 | | Date of Issue | 2010-12-23 | | Date of Implementation | 2011-07-01 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.10 (Total No.165) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the solid carbide straight shank twist 2 �� bevel (hereinafter referred to as " twist ") of the type and size. This section applies to a diameter of 2. 9 mm ~ 20 mm twist drill. | GB/T 25667.2-2010: Solid carbide twist drills with parallel shank -- Part 2: The types and dimensions for parallel shank twist drills with 2-degree angular flats
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Solid carbide twist drills with parallel shank Part 2. The types and dimensions for parallel shank twist drills with 2-degreeanguar fiants
ICS 25.100.30
J41
National Standards of People's Republic of China
Solid carbide straight shank twist
Part 2. 2 ° beveled straight shank twist type and size
Part 2. Thetypesanddimensionsforparalelshanktwistdrilswith2 ° angularflats
Issued on. 2010-12-23
2011-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
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 2.
This part is proposed by China Machinery Industry Federation.
This part of the tool by the National Standardization Technical Committee (SAC/TC91) centralized.
This part mainly drafted by. Shanghai Tool Works Co., Ltd., Chengdu Tool Research Institute.
The main drafters of this section. Li Zheng Wei, Zhang, Hujiang Lin, Xu Gang.
Solid carbide straight shank twist
Part 2. 2 ° beveled straight shank twist type and size
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
2.9 3.75
3.75 4.75
4.75 6.00
6.00 7.00
7.00 8.00
8.00 10.00 108,947,351,036,149
10.00 12.00 1,210,255,401,187,156
12.00 14.00 1,410,760,431,247,760
14.00 16.00 1,611,565,451,338,363
16.00 18.00 1,812,373,511,439,371
18.00 20.00 20 131,795,515,310,177
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