This standard applies to gas turbine power plants. JB/T 6687-1993 12-point flange nut JB/T6687-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 6687-1993
12-angle flange nut
1993-06-01 Issued
Ministry of Machinery Industry of the People's Republic of China
1994-01-01 ImplementationWww.bzxZ.net
Mechanical Industry Standard of the People's Republic of China
12-angle flange nut
This standard applies to gas turbine power plants, m
0.2×45°
Thread specification D=M16,
Marking:
0.5×45°
JB/T6687-1993
Material 30CrMnSiSurface treatment is radium-plated passivated12-angle flange nutMarking exampleThread Female JB/T6687-93-M16·30CrMnSi-Cd.D Table 1
Thread specification
Basic size
Weight (piece) kg
Thread specification
Approved by the Ministry of Machinery Industry on 1993-06-01
M30×3
M34×3
1994-01-01
Thread specification D
Basic size
Weight (piece) kg
Thread specification
Basic size
Weight (piece) kg
M36×3
Technical conditions are in accordance with the provisions of JB/T6688-1993. Additional remarks:
This standard is proposed by Nanjing Gas Turbine Research Institute. This standard is under the jurisdiction of Nanjing Gas Turbine Research Institute. JB/T6687-1993
Continued Table 1
M39×3
M42×3
M30×3
M33×3
M45×3
This standard was drafted by Nanjing Steam Turbine and Electric Motor Works, Nanjing Gas Turbine Research Institute, Harbin Steam Turbine Works, and the 703 Institute of China State Shipbuilding Corporation.
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