JB/T 6545-1993 All-metal spring hoop hexagonal locking nut

This standard specifies the type, size and technical requirements for all-metal spring ferrule hexagonal lock nuts with thread specifications M8~M48. JB/T 6545-1993 All-metal spring hoop hexagonal locking nut JB/T6545-1993 Standard download and decompression password: www.bzxz.net

J13 | 03 Released
Ministry of Machinery Industry of the People's Republic of China
Released
Implemented on 1994-07-01
Machinery Industry Standard of the People's Republic of ChinaWww.bzxZ.net
All Metal Spring Yellow Hoop hexagonal lock nut
1 Subject content and scope of application
JB/T 6545-93
This standard specifies the thread specifications M8 ~ M48 all-metal spring hexagonal lock nut ( (hereinafter referred to as the lock nut) type, size and technical requirements,
This standard is applicable to performance levels of 5, 8.10, 12, A level (for D≤M16), B level (for D> M16) lock nut. 2 Reference standards
GB5267
GB5779. 2
Fastener acceptance inspection, marking and packaging
Basic dimensions of ordinary threads (diameter 1~600mm) Ordinary thread tolerances and fits (diameter 1~355mm) Mechanical properties of fasteners Nuts||tt ||Fastener Tolerances Bolts, Screws and Nuts
Threaded Fastener Plating
Fastener Surface Defects
General Requirements
Type, size and marking
The type and size of the lock nut shall comply with the figure and Table 1. 3.1
Thread specification D
8. 75||tt| |8
Approved by the Ministry of Machinery Industry on 1993-09-03
10|| tt||14. 6
90 *~120
Table 1
M16|| tt||17.3
24.8|| tt||29.56
(M22)|| tt||23.7
1994-07-01 Implementation
Thread specification
D||tt| |max
Thread specifications
4.5|| tt||13
23.9|| tt||22.6
5.5||tt| |16
27|| tt | | 25.7 | | tt | | 13.7 | tt||JB/T 6545--93
Continued Table 1
27.3|| tt||16.5
33||tt| |31.7
8.8|| tt||24
36|| tt||33.1
9.2|| tt||27
Thread specification D=M12, performance level 8, processed without table, Class A lock The purple nut is marked as: Nut M12JB/T6545-93
4 Technical requirements
Technical requirements should comply with Table 2.
Table 2
Material
Mechanical properties
Material
Effective
Force
public
difference
common
standard
standard
moment
label|| tt||quasi
product grade
standard
surface
processing
table country defects| |tt||Acceptance and packaging
Accurate
Note: The effective torque refers to the locking torque of the nut feeding part. 2
GB196,GB197
5.8, 10, 12 (Grade 12 D≤M16)
GB 3098. 2||tt ||According to the provisions of Table 3
M42|| tt||45. 4
A is used for D≤M16.B is used for D>M16
(1) without processing
(2 ) Galvanizing (GB5267)
(3) Oxidation
GB5779. 2
The effective torque of the locking nut should comply with the requirements in Table 3. Thread specification D
Performance
Performance
Performance
Performance
10, 12
First time screwing in
The first time to screw out
The fifth time to screw out
The first time to screw in
The first time to screw out
The fifth time to screw out
Vibration pattern specification D
First screw-in
First time out
Fifth time screw-out
First screw-in| |tt||First time out
Fifth time out
Additional notes:
min| |tt||M8
M24| |tt||80
JB/T 654593
Table 3
M27| |tt||94
15.5||tt ||2. 3
16||tt ||12
2. 3||tt ||31
160||tt ||21.5
This standard is proposed and managed by the Xi'an Heavy Machinery Research Institute of the Ministry of Machinery Industry. This standard is drafted by Luoyang Mining Machinery Factory. The main drafter of this standard is Wang Xuetong.
4.2||tt| |M36
5.3|| tt||72
220|| tt||29
90|| tt||13
35||tt| |27
22| |tt||N·m
9.0| |tt||M48
3||tt ||3
22| |tt||N·m
9.0| |tt||M48
3||tt ||
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