PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified PF11MF-032-1

The PF11MF-032-1 is a spring-loaded, flare-mounted captive panel screw with a knurled metal cap, designed for flush installation on the back side of panels with close centerline-to-edge spacing. It features a shoulder on the retainer for positive stop during installation, an anti-cross-threading design, and a threaded shaft in #10-32 UNF thread size. The knob and retainer are made of aluminum, the screw is hardened carbon steel, and the spring is 300 series stainless steel. The screw is zinc plated per ASTM B633, SC1 (5µm), Type III, and has a nominal installed height with a floating capability of 0.010" (0.25 mm) in all directions from center. It requires a #2 Phillips driver and is suitable for sheet thicknesses up to 0.230".