GB/T 4391-1995 Double-ended spanners, opposite side dimensions GB/T4391-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Combinations of double-end wrenches gaps
Combinations of double-end wrenches gaps This standard refers to the international standard ISO1085:1986 "Combinations of double-end wrenches gaps". Subject content and scope of application
This standard specifies the combination type and combination series of double-end wrenches gaps. This standard is applicable to the combination of double-end wrenches and double-end box wrenches. 2 Combination type
The combination type of double-end wrenches is shown in the figure. 3 Combination serieswwW.bzxz.Net
3.1 Commonly used wrench gap size combinations are specified in Table 1. Approved by the State Bureau of Technical Supervision on October 24, 1995 20
GB/T4391--1995
Replaced GB4391-84
Implemented on July 1, 1996
Series 1
10×11
13×16
(13×17)
18×21
( 19×22)
GB/T4391--1995
Series 2
11×13
12×14
16×18
(17×19)
21×24
(22×24)
Note: The size combinations of opposite sides in brackets can still be used during the transition period between new and old fasteners. 3.2 The size combinations of opposite sides of wrenches as auxiliary series shall be in accordance with the provisions of Table 2. Table 2
10×12
14×15
16×17
18×19
20×22
Series 1
24×27
(30×32)
30×34
36×41
46×50
55×60
3.3 Other opposite side size combinations (not recommended, but still in use) shall be in accordance with the provisions of Table 3. SixS
21×23
25×28
38×41
60×65
70×75
75×80
Series 2
27×30
(32×36)
34×36
41×46
50×55
12×13
GB/T4391--1995
Note: It can also be formed into appropriate series according to user needs. Additional remarks:
This standard is proposed by China Light Industry General Association and is under the jurisdiction of the National Tool Hardware Standardization Center. StxS
13×14
14×17
19×24
30×36
This standard was drafted by the First Working Group of the Tool Hardware Sub-Technical Committee of the National Technical Committee for Standardization of Hardware Products. The main drafters of this standard are Lin Meide, Zhou Yanmou and Xue Guicen. This standard was first issued on May 14, 1984. This standard was secondly issued on October 24, 1995. 22
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