This standard specifies the product classification and requirements for hand and machine cross-recessed screwdriver shanks. This standard applies to hand and machine cross-recessed screwdriver shanks (hereinafter referred to as "shanks"). QB/T 2564.3-2002 Screwdriver cross-recessed screwdriver shanks QB/T2564.3-2002 Standard download decompression password: www.bzxz.net

ICS 25.140. 30
Classification number: J47
Reservation number: 10632002
Light Industry Standard of the People's Republic of China
QB/T2564.3-·2002
Replacement QB/T3863—1999
Screwdrivers Cross-recessed Screwdrivers Screwdrivers
Screwdrivers--Screwdriver blades for cross-reressed bead screws (1so87641:1999, AssemblytoolsforserewsandnutsScrcwdrivers for uruss-toessel hcad srews--Part l:Driverpoints,MOD)
2002-09-21 Issued by the State Economic and Trade Commission of the People's Republic of China on December 1, 2002. Implemented by QB/T2664.3-2002. This standard is the original national standard CT10638-1989 "Cross-type lighting fixtures and screw rods 31. This standard was issued by the Ministry of Industry and Information Technology [1999] No. 112. The standard is equivalent to the conversion standard QB/T3362-1999. This standard corresponds to the international standard 1S08764-1: 1999 frequency-controlled media-equipped tools---sharing tree blasting nails--Part 1: Head (English version).
The consistency of the standard with [S08764-1:1909 is revised, and the main differences are that the first part of the international standard is included in the fourth part of the standard applicable to my country: GB 10635 has other regulations, and the relevant provisions are included in this standard. Compared with the standard 3Q/T18621999, the main changes are as follows: the new type of use (see 3.1);
is the basic size of the rod according to the requirements of 1508764-1:1999, the scanning mark is adjusted (see 3.1);
adds the technical requirements of the application of the rod (see 4.1 and 4.2). This standard is jointly issued by the China Federation of Hardware Industry. Technical Standard: National Hardware Standardization Center. This standard was drafted by Shanghai Shaner Research Institute. The main drafters of this standard are: Lin Meide, Correspondence Kang, Chen Cunbi. This standard is a contemporary industry standard QB/3862-[999 Cross-Country Release and is generally published in other counties.
1 Scope
Screwdriver cross recessed screwdriver shanks
This standard specifies the product classification and requirements for hand and machine cross recessed screwdrivers and their shanks. This standard applies to hand and machine cross recessed screwdriver shanks (hereinafter referred to as "screwdrivers"). 2 Normative referenced documents
QB/T256-.3—2022
The clauses in the document become the clauses of this standard through reference in this standard. For any referenced documents of a certain period, all subsequent amendments (excluding errors) or revisions are not applicable to this technical standard, however. However, the latest versions of these documents can be used for the micro-root technology standards that have been established by the Ministry of Science and Technology: For any open documents that do not specify the date of publication, the latest version shall apply to this standard. GB.T10635·-2003 Technical conditions for the use of rotary bearings 3 Product classification www.bzxz.net
3.1 Type
Rotary bearings are divided into two types according to their use: manual and machine. 3.2 Type
The rod mold is divided into H type and Z type according to its shape, as shown in Figure 1~Figure 2. 0630
a file display warehouse;
Kang takes the manufacturing and must-be-four-push equal division" Yang 1 H-type rotary rod
QB/T 2564.3-2302
-agent: the angle of the workpiece is obtained at the end of the length L; D number can be seen in the following figure:
Figure 1()
Figure 2Z-type rotary rod
QB/T 2564.3—2002
QB/T2564.3-2002
3.3 Basic dimensions
The basic dimensions of the analyzed system shall be in accordance with the provisions of Tables 1 and 2. Table 1 Basic dimensions of type 1 rotary rod
Yellow rod straight D
Tower diameter
Basic dimensions of type B rotary rod
138*30
138-00
140*30
j46fme
1$3°30
6*50°
B\ 15'
3.4 ​​Marking example
The name, type, number, model code, heat standard abbreviation of the seal are shown below: The number is 2, which is Gm type hand-painted paint. The optional mark is: cross nail holder 2H6V7561.3-234
4°23'
5* 15'
4G'155
56°30
4 Requirements
4.1 Hardness
QB/T 2564.3-2002
From the end of the rod, within a length of at least 3 times its nominal diameter, the hardness of the hand-turned rod shall not be less than 54HRC, and the hardness of the whole rod shall not be less than 58HRC.
In addition, the hardness of the rest of the rod shall not be less than 501R. 4.2 Torque
Minimum test torque of the rod M3 Table 3 Minimum test torque of the rod
1 (1384)
Minimum - nominal diameter of the rod, mm
b M4ig=++-(1--+*/50 )
4.3 Other requirements
Other technical requirements for the rod shall comply with the provisions of B/T10635-2003
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