Patented Product Lock Nut Shockproof Nut Kit M8 M10 M12 M14 M16 M18 M20 M22 M24

Product Description

Certifications
Product Parameters

Item	Model	Brand	Unit Weight kg	Performance rate	Material	Surface treatment
1	M8	JFS-LOCK	0.010	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
2	M10	JFS-LOCK	0.021	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
3	M12	JFS-LOCK	0.031	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
4	M14	JFS-LOCK	0.051	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
5	M16	JFS-LOCK	0.076	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
6	M18	JFS-LOCK	0.108	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
7	M20	JFS-LOCK	0.148	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
8	M22	JFS-LOCK	0.194	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
9	M24	JFS-LOCK	0.243	8.8	Carbon steel 45#,10B21 Stainless steel 304	Zinc plating or blackening
Remarks: Special specifications of the lock nuts, such as thickness, material, surface treatment, inner thread requirements, environmental requirements etc, please to be clarified in advance.

Installation Instructions

Recommended torque for JFS-Lock nut installation (Class 8 Coarse teeth nut)
Model	Installation torque for lower nut N*m	Installation torque for lower nut N*m
M8	25	25
M10	50	50
M12	90	90
M14	140	140
M16	200	200
M20	400	400
M24	700	700
M30	1200	1200
M36	1800	1800
M42	2800	2800
M48	4000	4000

Application
Product Description A shockproof nut kit includes an upper nut and a lower nut, in which an end surface of the upper nut is provided with a boss of elliptic cylinder; on the upper end surface of the elliptic cylinder at a longer planar extension side is provided an unfilled corner; in an end surface of the lower nut is concavely formed a cylindrical groove matching with the boss of elliptic cylinder, and in the assembly state, the boss of elliptic cylinder on the upper nut is in clearance fit with the cylindrical groove in the lower nut. The present invention avoids the slipping and displacement of nuts in the meshing process, and ensures the coaxiality of the upper and lower nuts during installation to the utmost. In terms of both safety and shockproof, the present invention achieves satisfactory results, the installation thereof is convenient and reliable, and the disassembly thereof is simple.

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