This standard specifies the basic requirements for the position tolerance, material and hardness, appearance and surface roughness, marking and packaging of 90° cone countersinks with guide pins. This standard applies to 90° cone countersinks with guide pins produced in accordance with GB/T4263 and GB/T4264. GB/T 4265-2004 Technical conditions for 90° cone countersinks with guide pins GB/T4265-2004 Standard download decompression password: www.bzxz.net

ICS25.150.30
National Standard of the People's Republic of China
GB/I ​​4265—2004
Generation of GB/42651S84
90° Conical Drills with Pilots
Technical Conditions
90Countersiaks with pilots-Tcchnical 2004-02-10 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration
2004-08-01 Implementation
This standard replaces GB/T4265-1984 Technical Conditions for Multi-UU Cone Calculation Stations 3. This standard is different from GB/42G5-1981 with the following changes: The format is in accordance with GB/T1.1200:
Station material is changed from \WI&Cr4V\ to \W6MojCr4V2\; Performance test is cancelled;
Type size table and roughness are not included in this standard! The standard has been adjusted.
This standard is proposed by China Machinery Industry Association. This standard is under the jurisdiction of the National Technical Committee for Standardization: The unit of this standard is Chengdu Institute of Technology. This standard shall be used for the production of 90° cone drills with guide pins.
This standard represents the following publication status: GB/T 4265-198: .
GB/T 4265-2004
1 Scope
Technical conditions for 90° cone drills with guide pins
GB/T:4265-2004
This standard specifies the position tolerance, material density, surface roughness, marking requirements of non-guide pin surface drills.
This standard specifies the production of 90° cone drills with guide pins in accordance with GB/T4263 and GB/T4264. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For dated referenced documents, all subsequent revisions, including errors or mismatches, are not applicable to this standard. However, the latest versions of these documents shall be used when the parties reach an agreement based on this standard. For undated referenced documents, the latest version shall apply to this standard. GI/T26 5C taper drill with shank # column (GE/T426—2004.S1/2051991.MD) G/T4264 Monte Carlo 90 jar drill with interchangeable guide (GB/T42642934.1SU4204:1977.MUD) 3 Position tolerance
The position tolerance of the guide on the wrong side is shown in the table below. Table 1
Material and hardness of the shaft of the lamp
Ning to the diameter of the shaft
4>-17--22
Unit is cancer meter
28~-4G. +
≤, 1. Made of W6M0542 or other high performance steel with equivalent performance, the drill bit is made of other materials with equivalent performance
4.2 Intensity of working part:
T: 63HRC--66HRC
Polishing part: 40HRC--HRC3HRC--4HR5 Appearance and surface stability
5.1 The drill surface shall not have defects such as cracks, symptoms, rust and burns that affect the performance. 5.2 The upper limit of the surface chain is supplied,
Front and rear four hanging pairs of fake 6.3
Vehicle quality, Xuedu, Rac.Aam
Transfer rod piece 1.6m
6 Marking and packaging
6.1 Marking
6, 1.1 The bottom of the product is marked with
CB/T4265—2004
Manufacturer's mark:
Diameter of diamond, Xuedu diameter!
High-strength steel code: HSS)
2 The packaging box should be marked with:
The name, address and trademark of the manufacturer or distributor: Diamond mark: Www.bzxZ.net
High-strength steel brand or code:
Applicable explosion inspection or screw standard age;
Number of pieces:
Year and month of manufacture.
Diamonds should be treated with anti-inducing treatment before packaging, and the packaging surface must be firm to prevent scratches during transportation.2
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