18SS20 20SK A1K Potentiometer

The A1K in the product identifier refers to a 1 kOhm (1000 Ohm) potentiometer with an audio (logarithmic) taper. The other numbers and letters (18SS20 20SK) likely refer to specific manufacturing details, dimensions, or series within a manufacturer’s catalog.
Product Details
Resistance Value: The total resistance is 1 kOhm (1000 Ohms).
Taper: It has an audio taper, also known as a logarithmic taper, which is denoted by the “A” prefix. This type is commonly used for volume controls in audio applications because the human ear perceives sound levels logarithmically.
Type: It appears to be available in both slide and rotary formats based on common product listings, with the specific model number indicating the exact type. The “20SK” likely specifies the shaft length or other physical dimension (e.g., 20mm shaft).