PennEngineering® Large Knob, Spring-loaded - PEM C.A.P.S. - Unified PF11PM-440-1-R-2

PF11PM series captive panel screws are spring-loaded, flare-mounted fasteners with a PC/ABS knob and hardened carbon steel screw and retainer, designed for installation into sheet metal up to HRB 80 or HB 150 hardness. The part features a #2 Phillips driver, #4-40 Unified National Fine thread, and a 0.170-inch length. The knob is color-coded red per ASTM specifications and includes a dimple to indicate metric thread compatibility. The retainer allows a minimum floating capability of 0.010 inch in all directions. The screw is zinc-plated per ASTM B633, and the spring and retaining clip are stainless steel. The assembly is UL 94V-0 rated and halogen-free with a maximum operating temperature of 99°C.