JP2001056009A - Hexagon head bolt with hexagon socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten workability by providing a hexagon socket for a hexagonal bar wrench in the end face of a hexagonal head part of a hexagon bolt standardized according to JIS. SOLUTION: A hexagon socket 3 for a hexagonal bar wrench is provided in the end face of a hexagonal head part 2 of a well-known hexagon head bolt 1 standardized according to JIS, and the sizes of the head part 2 and the socket 3 are conformable to JIS standards. Thus, any tool for a hexagon head bolt and a bolt with a hexagon socket can be used, and when strong fastening force is needed, a hexagon spanner can be used. In fastening and unfastening work, in the loosening state, quick work can be done by a hexagonal bar wrench, and in the case where a work space is narrow that the hexagon spanner can not be used, the hexagonal bar wrench can be used. Further, in the case of fastening with a hexagon head bolt and a hexagon nut, a hexagon spanner is used for fastening and unfastening, and a hexagonal bar wrench can be used for stopping co-rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hexagonal bolt with a hexagonal hole, which facilitates fastening and releasing operations.

[0002]

2. Description of the Related Art Conventionally, main bolts standardized by JIS include hexagon bolts and hexagon socket head bolts, each of which has a different head shape. Use

[0003]

The hexagon bolt uses a hexagon spanner and is suitable for firm tightening. However, the working speed is slow and a large space is required for working with the hexagon spanner. Hexagon socket head bolts are not suitable for firm tightening using a hexagonal wrench.However, the work speed is high and the space required for working with a hexagonal wrench is narrow. Tightening and releasing work can be performed even in unusable narrow spaces. Furthermore, when using a hexagon bolt and a hexagon nut to perform the fastening, two hexagon spanners will be used to prevent the hexagon bolt and the hexagon nut from rotating together when the fastening or release is performed. This is often difficult and sometimes impossible. The present invention has been made in order to compensate for these disadvantages and to enhance workability.

[0004]

Means for Solving the Problems A hexagonal hole (3) for a hexagonal wrench is provided on an end surface of a hexagonal head (2) of a hexagonal bolt (1), which is a well-known hexagonal bolt (1) standardized in JIS. The present invention is a hexagon socket head cap screw having the above configuration.

[0005]

Embodiments of the present invention will be described below. A hexagonal hole (3) for a hexagonal wrench is provided on the end face of a hexagonal head (2) of a known hexagonal bolt (1) standardized in JIS, and the size of the hexagonal head and the hexagonal hole Shall conform to JIS standards. The present invention has the above-described embodiments.

[0006]

The following effects can be obtained by using the hexagon socket head cap screw of the present invention. (A) Both tools for hexagon bolts and hexagon socket head bolts can be used. (B) If a strong tightening force is required, a hexagon wrench can be used. (C) Fastening work with a hexagon wrench when loosened during fastening and releasing work. (D) If the work space is too small to use a hexagon wrench, a hexagon wrench can be used. (E) When fastening using a hexagon bolt and a hexagon nut, a hexagon wrench can be used for fastening and releasing, and a hexagon wrench can be used for locking together.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a front view of the present invention.

FIG. 3 is a right side view of the present invention.

[Explanation of symbols]

 1. Hex bolt 2. Hex head 3. Hex socket

Claims (1)

[Claims] A hex socket (3) for a hex key wrench is provided on an end face of a hex head (2) of a known hex bolt (1) standardized by JIS. , Hexagon socket head cap screws.