GB/T 4260-2004 Straight shank flat bottom countersinks with integral guide pin

This standard specifies the dimensions and tolerances of straight shank flat bottom countersinks with integral guide pins. GB/T 4260-2004 Straight shank flat bottom countersinks with integral guide pins GB/T4260-2004 Standard download decompression password: www.bzxz.net

ICS 25. 100. 3D
National Standard of the People's Republic of China
GB/T4260—2004
Generation Gn/T4260-19R4bZxz.net
Countcrhorcs with parallel shanks and solid piluts(15O4206:1991.M0D)
2004-02-10 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2004-08-01 Implementation
This standard is modified to adopt [S42(16:1999 Straight tree flat bottom hook drill with integral guide column English version). Compared with S2:1991, this standard has the following technical differences and editorial revisions: Normative references 1S0286-2:1988, add Guang G/14262; GB/T4260-2004
In addition to the international Appendix A (recommended literature), a new Appendix A (white Commonly used marking examples for flat bottom diamonds - - added marking examples
use decimal point "" and "" as appropriate numerals; use "this standard\" instead of "international standard", except for the international standard before
three standards are replaced by G/42G5-1984 with self-made flat plate: the six standards have the following changes compared with GB/T42601984: the writing format is according to GBT1.1-2000
. In Figure 1; the subscripts of the symbols "\" and "" have been adjusted, and the corresponding changes have been made in Table 1! The "Table" is consistent with IS)4206, and the pin code in GB/T42601S84 has been deleted. The number of teeth: The first batch of specifications for the cutting diameter of the blade is 4. The straight shank with a new diameter of the needle with a frequency of light mail is included in the size record of BT152.3-1988 and GB/152.41988. The surface roughness of the chain is adjusted according to the technical requirements of the standard. The appendix of the data of this standard is added. This standard is issued by the China Machinery Industry Federation. This standard is promoted by the National Technical Committee for Standardization. Drafting unit: The Ministry of Industry and Information Technology. This standard mainly includes the following aspects: 1. The main process of this standard is revised and replaced by the following standards: GB, T1260-1991. 1 Scope
Straight shank flat bottom drill with integral guide pillar
This standard specifies the size and tolerance of the straight shank flat bottom hook with integral guide pillar. 2 Normative references
GB/T4260—2004
The following documents are used as the terms of this standard by virtue of their applicability. For normative references, all subsequent revisions (excluding errors) or versions are not applicable to this standard. However, the relevant versions of these documents may be used by the research teams that reach an agreement based on this standard. For any referenced document without a date, its latest version is applicable to this standard. Technical conditions
3 Dimensions
3.1 Dimensions and tolerances
Type dimensions and tolerances of silver pins! As shown in Table 1, Figure 1 is only an illustration of this standard and is not a design detail drawing, because the unit of measurement for the 5m fast station is not suitable for Figure 1. The average straight line diameter is 2dt s:3.15.3.Ibcd: c.tt||Ju, c,12. i.3.2 Marking example. The diameter of the guide hole is small and the point grid is required. 1i) mm. Guide post point 5.5 micro-steel guide post point shank flat bottom drill straight shank half bottom drill × 5.5 GB/T426020C44 Technical Specifications
Straight flat bottom full drill with integrated guide parts shall be in accordance with the provisions of GB/T4262. Total length
GB/T4260-2004
Appendix A
Material Appendix)
Commonly used straight flat bottom drills
Table A.1 lists the commonly used straight flat bottom drills, guide post diameters, and applicable screw or frequency specifications. This size is suitable for processing GB/T152.3198 countersunk holes for steel pullers, GB/T152.41988 large angle head inspection and hexagonal head countersunk holes, table A.1
scheduled stop diameter
Huagui diameter
Jingchuan cap or feed grid
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