Nut D
Nuts are parts that connect mechanical equipment tightly. Through the threads on the inside, nuts and bolts of the same specification can be connected together.
For example, the M4-P0.7 nut can only be connected with the M4-P0.7 series bolt (in the nut, M4 means that the inner diameter of the nut is about 4mm, 0.7
Means that the distance between two threads is 0.7mm); the same is true for American products, for example, 1/4-20 nut can only be matched with 1/4-20 screw
(1/4 means that the inner diameter of the nut is approximately 0.25 inches, and 20 means that there are 20 teeth in every inch).
For example, the M4-P0.7 nut can only be connected with the M4-P0.7 series bolt (in the nut, M4 means that the inner diameter of the nut is about 4mm, 0.7
Means that the distance between two threads is 0.7mm); the same is true for American products, for example, 1/4-20 nut can only be matched with 1/4-20 screw
(1/4 means that the inner diameter of the nut is approximately 0.25 inches, and 20 means that there are 20 teeth in every inch).
