The 2965FJ is a black phenolic knob designed for rotary control and adjustment in electronic equipment. It features a 1/4-20 UNC-2A threaded steel insert (zinc-plated) for secure mounting, with a 30° angular profile and multiple precision-machined dimensions including a 0.88 inch outer diameter and 0.56 inch height. The knob is manufactured from 04311 phenolic material (B41 grade) with tight tolerances (±0.005 inches for three-decimal dimensions), ensuring consistent fit and reliable performance. This knob is commonly used in instrumentation panels, audio equipment, and industrial control systems where a durable, professional-grade rotary interface is required.