This standard specifies the dimensions and tolerances of straight shank 90° conical countersinks with integral guide pins. GB/T 4263-2004 Straight shank 90° conical countersinks with integral guide pins GB/T4263-2004 Standard download decompression password: www.bzxz.net

IC8 25. 100. 30
National Standard of the People's Republic of China
GB/T4263—2004
Replaced with GB/42631981
Countersinks, 9o°, with parallel shanks and solid pilots (ISO4205:1991M0D)
Published on 2004-02-10
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
Implemented on 2004-08-01
This standard is modified to adopt TS04205:10 for the whole guide column. This standard has the following technical differences compared with TS(42C5:1): The following technical differences are found in the following editorial modifications: The referenced documents outside the specification are listed in the carbon center, In addition to IS 236-2:1988, G3/T4265 is added. - Marking examples are added: " " is used as a small effective point withdrawal symbol, ... 0 cone drill". This standard is compared with GH/42631934 as follows: The writing style is in accordance with GB/T1.1-2UU)
1: the foot mark of the symbol "\" is adjusted, and the corresponding table 1 is also made in 150)4205. In addition to the number of teeth in the front drill code in GT423-15: the cutting straightness is shortened, which is also a familiar regulation for the difference. The cutting diameter, guide diameter and the use of the continuous environment are listed in the appendix, and the dimensions are in accordance with GB/T152,2-:9 88 has been adjusted in the surface rent specification and technical standards of the proposed series! A series of commonly used series: - average cutting point diameter, 5~12,3 full drilled tree parts straight light according to the international standard. Thanks for the adjustment. The appendix of this standard is a data appendix, and the six standards are proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Standardization and Additives Technical Committee. Drafting unit of this standard: Chengbu.. Specific research institute wood standard on the main start: Ma.. Received the river. This standard represents the standard of the market clearance:. -B/T 4263-luS4.
1 Scope
90° taper drill bits with integral guide
This specification specifies the dimensions and tolerances of straight shank drill bits with integral guide. 2 Normative references
,/T 4263—2004
The clauses in the following documents shall apply to the clauses of this standard through reference to the standard. All references to documents with a date in the past shall apply to all subsequent amendments. The revised versions of the standard (excluding the contents of the standard) are not applicable to this standard. However, the parties who have reached an agreement based on this standard are encouraged to study whether the latest versions of these documents can be updated as soon as possible: For any referenced documents without a date, the latest version can be applied to this standard: GB/T4265 Section Guide Rod J0 Chain Face Drill Technical Conditions 3 Dimensions
3.1 Dimensions and Tolerances
The dimensions and tolerances of the drill are shown in Figure 1 and Table 1. Figure 1 only illustrates the diagram of this standard and is not a design detail drawing. Note: The diameter of the two points is the maximum diameter of the figure. Figure 1
2sa,*3. :5
3. 15-4,*5
16 s:12. 3
12,5-20
3.2 Marking example
Diameter
According to the number, the hole diameter is determined (enlarged
filled diameter 1/
handle starting point
diameter a=lo.emm, guide sample price d,=s.5ram's integral guide straight tree 9c dimension return sugar station: straight handle 90 hungry and mark 10.×5.54263—20044 connection technical conditionswwW.bzxz.Net
with integral guide in the 90\chain face banknote drill technical multiplication according to GE/Work 4255 regulations, the unit is meter
guide length
handle length,4
GB/T 4263-2D04
Appendix A
(Informative Appendix)
Common Series of Straight Surface Drills
Table A.1 gives the cutting diameter, guide column diameter and applicable screw or screw diameter specifications of 5 commonly used straight shank 90\ surface drills. Drills of these sizes are suitable for use with countersunk heads for TGH 1523.2-1983 case hardware. Installation A.1
Conservative point diameter
For the purpose of finding
Applicable screw or screw specifications
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.