Functional purpose (The following parameters are for reference only, and detailed parameters are based on real devices)

1. Universal component: Tension bowl holder, which should be selected according to the model of the user's testing machine. The testing machine is generally 60 tons or 100 tons.

2. The bolt tensile test should be equipped with: two tension bowls and one tension ring for each type of bolt. The standard bolt specifications are M12, M16, M18, M20, M22, M24, M27, M30, and the following specifications can also be customized: M6, M8, M10;

3. The nut tensile test should be equipped with one M32 universal nut, one screw for each type of nut, and one tension ring. The standard nut specifications are M12, M16, M18, M20, M22, M24, M27, M30, and the following specifications can also be customized: M6, M8, M10;

4. The bolt wedge load test should be equipped with an additional wedge pad on the basis of the bolt tension test auxiliary equipment. The angle of the wedge pad is divided into 10 degrees, 6 degrees, and 4 degrees, and the user should determine the specifications of the user bolt according to the national standard GB3098.1-2000; The specifications of the wedge pad provided are the same as those of the bolt.

5. GB3098.1-2000 Mechanical Properties of Fasteners - Bolts, Screws and Studs

Technical Specifications

condition Diameter grade	LsIt refers to the length of the unthreaded section of the bolt
	Ls≥2d		Ls＜2d
Bolt performance grade	3.6, 4.6, 4.8, 5.6, 5.8, 8.8, 9.8, 10.9	6.8, 12.9	3.6, 4.6, 4.8, 5.6, 5.8, 8.8, 9.8, 10.9	6.8, 12.9
d≤20	10°	6°	6°	4°
20＜d≤39	6°	4°	4°	4°