This standard refers to ISO 6149-1982. This standard specifies the type and size of pneumatic air port connection threads. This standard applies to pneumatic air port connection threads with a working pressure not exceeding 2.5MPa. JB/T 6377-1992 Pneumatic air port connection thread types and sizes JB/T6377-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 6377-1992
Pneumatic Air Port Connection Thread Types and Dimensions
Published on July 15, 1992
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
Air Port Connection Thread Types and Dimensions
JB/T 63771992
This standard adopts the international standard ISO6149-1982 "Metric oil and gas ports for fluid transmission systems and components - Types and dimensions".
Subject content and scope of application
This standard specifies the types and dimensions of air port connection threads of pneumatic components. This standard applies to air port connection threads of pneumatic components with a working pressure not exceeding 2.5MPa. 2
Cited standards
GB7306
GB7307
3 Types and dimensions
3.1 Type
Basic tooth form of common thread
Diameter and pitch series of common thread
Basic dimensions of common thread
Pipe threads sealed with threads
Pipe threads not sealed with threads
Type A of pneumatic component port shall be as specified in Figure 1. 3.1.1
Type B of pneumatic component port shall be as specified in Figure 2. (Diameter of hole to be constructed)
Intention egg
This ruler uses a close head
Cannot let the whole time
Small complete green length
Figure 1 Pneumatic component air port type A
Note; The conical surface cannot have directional and spiral knife marks, and a circular knife mark less than 1.6Ⅱm is allowed. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on July 15, 1992③
RO1-92
Grade D middle diameter)
Implementation on January 1, 1993
3.2 Dimensions
AE志满间
武更寸只明能
不维护请班时
JB/T6377-1992
(Shrinking my direct exemption model years ago)
(Original teaching Chinese)
Figure 2 Pneumatic component air port type B
The air port thread dimensions of pneumatic components are specified in the following table. D
Thread accuracy
(M12X1.25)
M16X×1.5
M33×2
M42×2
(M48X2)
M50×2
M60×2
Not less than
Not less than
Minimum definition
Depth
Not greater than
Note: ①The recommended maximum drilling depth should ensure that the pipe joint or locking nut to be tightened can be clamped by hand. ②If the B plane is a machined surface, the dimensions Y and S do not need to be machined. +0.1
Not less than
③The thread bottom hole depth given in the table requires the use of a flat-top tap to tap the specified thread length. When using a standard tap, the thread bottom hole depth should be appropriately increased.
When designing new products, the thread size in brackets is not recommended and is only used for old products. 2
Ordinary thread profiles are in accordance with GB192.
Ordinary thread dimensions are in accordance with GB196. www.bzxz.net
JB/T6377-1992
Ordinary thread diameter and pitch are in accordance with GB193. The corresponding relationship between pipe thread port dimensions and ordinary thread port dimensions is shown in Appendix A (reference). The profile, dimensions, tolerances and markings of pipe threads sealed with threads are in accordance with GB7306. The profile, dimensions, tolerances and markings of pipe threads not sealed with threads are in accordance with GB7307. e
JB/T6377-1992
Appendix A
Dimensions of pipe thread and ordinary thread port
(reference)
For the comparison of pipe thread port and ordinary thread port dimensions, please refer to the table below. Ordinary thread D
Thread accuracy
M27×2
M33×2
M42×2
M50×2
M60×2
Non-thread sealed pipe thread
Note: ①Other dimensions of pipe thread port are the same as those of corresponding ordinary thread port. ②Pipe thread is only applicable to port type B.
Additional instructions:
Pipe thread D
Pipe thread sealed with thread
Conical internal thread
Rc 1/8
Re 3/8
Re 1/2
This standard is proposed and managed by Wuxi Pneumatic Technology Research Institute of the Ministry of Machinery and Electronics Industry. This standard is drafted by Wuxi Pneumatic Components Factory. The main drafters of this standard are Shou Guanglun, Lu Juan and Ji Junsen. 4
Cylindrical internal thread
Rp 1/8
Rp 3/8
Rp 1/2
People's Republic of China
Mechanical Industry Standard
Air port connection thread type and size
JB/T 63771992
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2, Shouti South Road, Beijing
Postal Code: 100044)
Format: 880×1230
Printing Sheet: 1/2
Word Count: 8,000
First Edition in October 1992
First Printing in October 1992
Print Quantity: 1500
Price: RMB 5.00
Mechanical Industry Standard Service Network: http://www.JB.ac.cn6619
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