304 stainless steel cap nut M3/M6/M20

Nuts are parts that tightly connect mechanical equipment. Nuts and bolts of the same specification can be connected together through internal threads. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts (in the nut Among them, M4 means that the inner diameter of the nut is about 4mm, and 0.7 means that the distance between two thread teeth is 0.7mm); the same is true for American products, for example, a 1/4-20 nut can only be matched with a 1/4-20 screw ( A 1/4 finger nut has an inner diameter of about 0.25 inches, and 20 fingers have 20 teeth per inch).
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