GB/T 6078.4-1998
Center drills. Part 4: Technical specifications (English Version)
- Standard No.
- GB/T 6078.4-1998
- Language
- Chinese, Available in English version
- Release Date
- 1998
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2016-09
- Replace By
- GB/T 6078-2016
- Latest
- GB/T 6078-2016
- Scope
- This standard specifies the technical requirements for center drill size, material and hardness, appearance and surface roughness, performance test, marking and packaging. This standard is applicable to center drills produced according to GB/T6078.1, GB/T6078.2 and GB/T6078.3.
GB/T 6078.4-1998 history
- 2016 GB/T 6078-2016 Center drill
- 1998 GB/T 6078.4-1998 Center drills. Part 4: Technical specifications
GB/T 6078.4-1998 Center drills. Part 4: Technical specifications was changed to GB/T 6078-2016 Center drill.
GB/T 6078.4-1998 -All Parts
GB/T 6078.1-1998 Centre drills. Part 1: Centre drills for centre holes without protecting chamfers--Type A. Dimensions
GB/T 6078.2-1998 Centre drills. Part 2: Centre drills for centre holes with protecting chamfers--Type B. Dimensions
GB/T 6078.3-1998 Centre drills. Part 3: Centre drills for centre holes with radius form--Type R. Dimensions
GB/T 6078.4-1998 Center drills. Part 4: Technical specifications