The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.

The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.