Traditional Culture Encyclopedia - Traditional festivals - Ball thread diameter specification
Ball thread diameter specification
E 14, E26, E27, E40, etc.
Commonly used specifications of household light bulb screws are E 14, E26, E27, E40, etc. In daily life, these screws with different specifications are directly divided into two types: large and small screws. One is E27 bulb, which is often called large spiral bulb. The number after e indicates the diameter of the thread below the bulb in millimeters, and E27 indicates that the diameter is 27 millimeters. There are also small screws represented by E 14 and even E5 and E 10.
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